Agates Lexicon

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ID Agate
1523La Bajada Hill Agate, New Mexico, for Bajada Hill, 35o 33' 28" N and 106o 13' 45" W, Santa Fe County, New Mexico, Tetilla Park Map, U.S. Geological Survey, 7.5' x 7.5'. The La Bajada Hill term appears in Murphy (1961, p. 38, 39) although Geographic Names Information System calls the site Bajada Hill.
1524Lac DuBois agate, local name, British Columbia, moss and banded agate, see Baker, S. G., 1960. B. C. Gem Trails. The Mineralogist, v. 28, no. 4,5, p. 66, 68.
1525Lace Agate, descriptive term, multiple localities, Mexico, Australia, Idaho, etc. check for earliest usage of lace. Fraser, 1988 (p. 73) stated principal area was west of Villa Ahumada, Chihuahua, Mexico. Sinkankas (1959, p. 400) and Lyons and Young (1961, p. 79) use the term Lace Agate as opposed to Crazy Lace Agate, although Cross (1996, p. 70) used the latter term. Since the term Lace shows earlier usage than Crazy Lace, it should have precedence over Crazy Lace.
1526Lace Agate, Colorado, no description, Name appears in 1954 catalogue for Gem Exchange (Gem Village), Bayfield, Colorado, p. 4.
1527Lace Agate, Mex., colorful, lacy patterns, ...rare banded and tube formations, adv., Southern Gem & Mineral Company, Lapidary Journal, v. 9, no. 6, p. 519 [this is the earliest used of term applying to agate from Mexico that I have observed, rkp.]; adv., B &H Rock Shop, Rocks and Minerals, v. 36, no. 1,2, p. 104.
1528Lace Fortification Agate, Laguna, Mexico, this name was used by Fraser and Fraser (1988) and it may be the same material as described by Cross (1996, p. 74), which consists of successively enclosed, fine, concentric bands.
1529Lacy Moss Agate, no locality, no description, ...adv. House of Hobbies, Lapidary Journal, v. 1, no.2.
1530La Esperanza, Guatemala, opalized wood locality listed by Barbour and Barbour (1965, p. 1320-1326).
1531Lage Agate, source of word is unknown, and may be either a mispelling of Lace Agate from Mexico, or Lageado Agate From Brazil. The name is used in advertizements in Lapidary Journal, circa 1965 to 1972. May also be a misspelling of Sage Agate?
1532Lageado Agate, for Lageado, Rio Grande do Sul, Brazil (Mattos, 1974, p. 5).
1533Lagenstein, German, essentially layered stone or onyx agate. Gaertner (1971, p. 20) suggested that lagenstein was used for gems, cameos and engraved stones.
1534Lagos del Fuego Agate (Lake of Fire), Mexico, no description, adv., Rivera & Sons, Lapidary Journal, v. 31, no.4, p.1015.
1535Laguma (=Laguna?), Mexico?, misspelling. Adv., Gem Arts and Rocks, The Mineralogist, v. 28, no. 2,3, p. 22.
1536Laguna Agate, Mexico, no description, ...adv., Louis and Mary Woolman, Point Motel, Morro Bay, California, Lapidary Journal, v. 11, no. 1, p. 89. (This is the earliest observed reference found to date that uses the term Laguna, rkp.)
1537Laguna, trade name, adv., Southern Gems, Southern Gems, 1960. Also, Paso del Norte Minerals, Rocks and Minerals, v. 34, no. 11,12, p. 627; Merle's Rock Box, The Mineralogist, v. 26, no. 4,5, p. 137.
1538Laguna Agate, New Mexico, Ellermeier (1936a, p. 167) described colorful agates from two miles east of Laguna, New Mexico and Dickerson (1974, p. 31) used the term in parenthesis as a synonym of Luna Agate.
1539Laguna Agate, Mexico, from Rancho Borunda and for Ojo de la Laguna, Chihuahua, Mexico. See Keller, P. C., 1978 and Shaub (1979b, p. 2548-2566). Cross (1996, p. 49-56) stated that these are amygdaloidal agates taken from mines in the vicinity of 29o 28' 49" N and 106o 15" 58" W, Chihuahua, Mexico, and that they are extracted from the Rancho El Agate Andesite. These are probably the most popular of all agates from Northern Mexico.
1540Lahontarite Picture Jasper, Nevada, no description, adv., Sykes, Lapidary Journal, v. 40, no. 1, p. 197.
1541Lajeado (alternate spelling for Lageado, which see).
1542Lake Bed Agate, no locality, no description, adv., Tynskys, Rocks and Minerals v. 38, no. 9,10, p. 502
1543Lake Bottom Petrified Wood, locality not given, adv., Bishop's Agate Shop, The Mineralogist, v. 9, no. 11, p. 434.
1544Lake Cariba, Rhodesia (Zimbabwe), collecting locality reported by Zeitner (1968, p. 960-964).
1545Lake Havasu (agate, jasper), California, from localities around 114o 27' 30" to 114o 30' W and 34o 27' 30" N, San Bernardino County, California, Havasu Lake, Savahia Peak NE, Snaggletooth, and Chemehuevi Peak Quadrangles, U. S. Geological Survey, 7.5 minute series (Topographic). See Mitchell, (1985, p. 35, 36).
1546Lake Iliamna, Alaska, agate producing site reported by Niemann (1966, p. 350, 351). Beach agates, for Iliamna Lake, Lake and Peninsula counties, Alaska, Iliamna USGS 7.5' x 7.5' maps.
1547Lake Pleasant, Arizona, probably for Lake Pleasant, Maricopa County, Arizona, no description, see Getsinger (1961, p. 316).
1548Laker, collectively, term used by many authors, speakers, dealers for Lake Superior Agate, which see.
1549Lake Sam Rayburn Petrified Wood, Texas, probably a synonym of Catahoula Petrified Wood, which see.
1550Lake Superior Agate, Lane, 1911, for materials from Isle Royale and Keweenaw Peninsula, Michigan. Dustin (1936, p. 152, 154) used the term for materials in the Duluth and Two Harbors, Minnesota area. Also, for Lake Superior or Red till of Late Pleistocene (Wisconsin) Age in Minnesota See Rapp and Wallace (1979, p. 18). Scott (1953, p. 108-110) used the term to apply to agates from Beaver Bay, Ontario, Canada. Name used in advertisements as early as 1938, e. g., The Gem Exchange, Hobbies, v. 43, no. 1, p. 110.
1551Lake Superior Fire Agate, according to Kraus and Slawson (1947, p. 169) a glass that is an opal simulant.
1552Lame Johnny Creek Agate, South Dakota, for Lame Johnny Creek, which extends from about 43o 28' 27" N to 43o 38' 31' N and 103o 06' 11" W to 103o 20' 52" W, Fall River and Custer counties, South Dakota, Smithwick NE, Smithwick NW, Fairburn SW, Boland Ridge and Butcher Hill Quadrangles, USGS 7.5' x 7.5'. Connoly and O=Harra (1929, p. 341) used the term for agates that were derived from a jaspery conglomerate in the Lakota Formation of Cretaceous Age. The term now generally applies to agates that formed in Limestone of Pennsylvanian age and have been subsequently reworked into fluvial sediments of Oligocene and younger ages. Agates described by Connoly and O=Harra, above, are similar to Fairburn Agates except they are found in older strata.
1553Landscape Agate, descriptive term suggesting a scene or picture. See Bauer (1896, p. 512). Several choice examples from Montana are illustrated by Farrington (1927, pl. VI). Synonyms: Picture Agate, Scenic Agate.
1554Landschaftsachat (German) landscape agate, see Gaertner (1971, p. 24).
1555Lapland Jasper, Finland, ...bright red with silver like patterns, K & D. Koski, Lapidary Journal, v. 34, no. 1, p. 412.
1556Laredo Agate, Texas, red, yellow, brown, m adv., Royal Gem Company, Lapidary Journal, v. 4, no. 2, p. 102.
1557Larkin Valley Jasper, California, French (1977) Gems & Minerals, no. 480.
1558La Rosa Nodules, Mexico, ...similar to Laguna, adv., Gem Center, U.S. A., Lapidary Journal, v. 21, no. 10, p. 1261.
1559Las Choyas Geodes, Las Choyas, Chihuahua, Mexico, hollow, round thunder eggs commonly called ôcoconutsö for their appearance. Cross (1996, p. 99-103, fig. 57) stated that these formed in an ash flow tuff that had altered to bentonite and was part of the Liebres Formation, about 44MYA.
1560Las Lilas Jasper, Montana? lavender, mauve, lilac colors, adv., Salo & Cross, Prospectors, Lapidary Journal, v. 13, no. 1, p. 201.
1561Last Chance Canyon, California, Hagar, D., 1946. A few California locations, Earth Science Digest, v. 1, no. 5, p. 8-9. In addition to agates, locality contains petrified woods, palm root, and opal: Hagar, D. J., 1947. Collecting Kern County, California, The Mineralogist, v. 15, no. 1, p. 3-7. Strong (1978, p. 48-51) also listed this locality.
1562Last Chance Canyon Agate, California, for Last Chance Canyon, 35o 22 ' 06" N and 117o 54' 25" W to 35o 22' 30" N and 117o 54' 34" West, Kern County, California, Cantil and Saltdale NW Quadrangles, U.S. Geological Survey, 7.5 Minutes Series (Topographic); adv., Mineral Miracles, The Mineralogist, v. 13, no. 7, p.264. See Schwartz (1943a, p. 45 and 1943b, p. 142); Henry, D. J., 1947. Collecting Kern County, California, The Mineralogist, v. 15, no. 1, p. 3-7; Robertson (1976, p. 18) suggested these agates came from the Riccardo Formation of Pliocene age and Perry (1961, p. 312) stated Last Chance Canyon was in the El Paso Mountains.
1563Latah Petrified Forests, Washington and Oregon, large areas containing abundant agatized and opalized wood and mentioned by Dake (1942, p. 339, 340, 352, 354).
1564Lauterbach, Germany, site reported by Gotze, Plotze, Fuchs and Habermann (1999, p. 152, 153) who suggested that agates from this site formed in a rhyolite and examined them by electron paramagnetic resonance, cathodoluminescence and trace element content.
1565Lavender Bands-Eye Lace Agate, Mexico, no description, adv., The Little Gem Rock Shoppe, Lapidary Journal, v. 14, no. 1, p. 77.
1566Lavender Blue Jasper, Mexico, no description, adv., Gemex Co., Lapidary Journal, v. 20, no. 8, p. 925.
1567Lavender Lace Agate, Durango, Mexico, no description, adv., Louis and Mary Woolman, Lapidary Journal, v. 11, no. 1, p. locality, no description, adv., Fire Mountain Gems, Lapidary Journal, v. 32, no. 10, p. 2142-2143.
1568Lavic Agate, California, for Lavic siding, AT &SF railway, 34o 43' 40" N and 116o 18' 45" W, near Barstow, San Bernardino County, California, Lavic Lake Quadrangle, USGS 7.5' x 7.5'. Adv., Allan Branham, Box 562, Lander, Wyoming, The Mineralogist, v. 15, no. 3, p. 133; Morton Minerals & Mining, 453 East Garvey Boulevard, El Monte, California, Lapidary Journal, v. 2, no. 4, p. 245. The site was reported by Lewis (1942, p. 116) to contain jasper and Perry (1961, p. 312) stated this material included green, red, sagenitic, and moss agates.
1569Lavic Jasp-Agate, see lavic jasper.
1570Lavic Jasper, California, for Lavic siding, AT &SF Railway, near Barstow, California, for Lavic siding, AT &SF railway, 34o 43' 40" N and 116o 18' 45" W, Lavic Lake Quadrangle, USGS 7.5' x 7.5' map. See Lewis (1942, p. 116, 117) and Hagar, D., (1946 p. 8-9) for early reports. Jasper from scattered outcrops in secs 13, 14, 23, 24, T. 8 N., R. 5 E., and secs. 10, 11, 12, 13, T. 7 N., R. 6 E., San Bernardino County, California. Hector and Lavic Lake Quadrangles, U. S. Geological Survey, 7.5 minute series (Topographic). The agates and jaspers are from rocks mapped as undivided volcanics of Tertiary Age by Jenkins (1938). See also Schweitzer (1944, p. 80-82), Berkholz (1962, locality 18), Strong (1971, p. 53) and Mitchell (1986, p. 54). McMackin (1981, p. 1868-1876) suggested it is red, green, brown, and white.
1571Lawson's Plume Agate, Oregon?, dendritic plume agate, probably from Oregon, Trade Name used by Herbert Wm. Lawson, Terrebonne, Oregon, adv., Lapidary Journal, v. 1, no. 4, p. 214.
1572Lead Pipe Springs Agate, California, for Lead Pipe Spring, 35o 27' 15" N and 117o 10 ' 51" W, San Bernardino County, California. Eakle (1922, p. 88). ...fine blue chalcedony occurs two miles northeast of Lead Pipe Springs. Symons (1936b, p. 215) stated that Mrs. George Lightburn had donated clear skyblue chalcedony from Lead Pipe Springs which cuts and polishes well to the special exhibit of California semi-precious gemstones at the Division of Mines, San Francisco. Schweitzer (1944, p. 409-410) recorded blue agate nodules from this site. Hagar (1946. p. 8-9.) listed this site. ...Blue chalcedony in a red rhyolite porphry matrix, ...formerly known as ACal-Azur@, ....thunder eggs containing high quartz, tridymite, chalcedony, low quartz, and opal (Rogers, 1947, p. 1256)., sagenitic, and moss agates; this site is now on a military reservation. (Perry, 1961, p. 310). Zeitner (1964, p. 349) reported a royal blue chalcedony that had been collected from here as early as 1911, but she did not cite a source for this information. The site is now on Camp Irwin and no longer accessible. See also Ransom (1955, p. 72).
1573Lee opalite, Utah, adv., Tynskys, Rocks and Minerals, v. 36, no. 1,2, p. 78. There are a number of possibilities for the derivation of this term from geographic names.
1574Lemon yellow opal, Idaho, ...facet grade "canary" lemon yellow opal, adv., Stewart's Gem Shop, Lapidary Journal, v. 29, no. 5, p. 1002.
1575Lemurian Agate, ...a new California find, no description, no locality, Trade Name, adv., Pyramid Rock Mart, Lapidary Journal, v. 1, no. 2, p. 79. ...adv. Rocks & Minerals, 1947, v. 22, no. 8, p. 746. by Pyramid Rock Mart, Barstow, California. Name also appeared in 1954 catalogue for Gem Exchange (Gem Village), Bayfield, Colorado, p. 3. Fraser and Fraser (1988) listed this material as being named for Lemur, California, a name that does not appear on U. S. Geological Survey Geographic Names Database.
1576Leopard Skin Agate, India, similar to Turitella, adv., Charles Weidinger, Lapidary Journal, v. 14, no. 1, p. 2
1577Leopard Skin Color Jasper, India, adv., Murray American Corporation, Rocks and Minerals, v. 47, no. 9, p. 535.
1578Leshem, 7th stone of Aaron=s Breast Plate, either a jacinth or a brown agate. See Shipley (1971, p. 114)
1579Levan Agate, Utah, blue Valley Agate, Hubert, (1953, p. 36, 38, 40, 42). Probably named for Levan, 39o 33' 31" N and 111o 51' 40" W, Juab County, Utah, Levan Quadrangle, U.S. Geological Survey, 7.5 Minute Series (Topographic).
1580Lily pad jasper, synonym for lily pad stone, no locality, no description, adv., Moyer Rock Shop, Rock & Gem, v. 5, no. 8, p. 13.
1581Limestone Gulch, California, jasper producing site recorded by Taylor (1954, p. 18-21). No further details.
1582Limpopo River Agate, South Africa, for Limpopo River. See Windisch (1979, p. 18-30). May be synonym of Botswana Agate.
1583Linhouse Peebles, Scotland, historic site of Heddle (1901, p. 76) bed of gravel, banks of Linhouse Water. Rodgers (1975, p. 87) listed the site as Ain burn@, where burn is commonly used for stream or rivulet in England and Scotland. The site is also listed by Macpherson (1989, p. 19).
1584Lippinite, California, ...contains gold, silver, copper, blue & green copper swirls in a jasper colored red from silver, Lapidary Journal, v. 21, no. 10, p. 1293.
1585Lithophyse de lÆEsterel, France, (tr. lit. lithophysae from löesterel), thunder egg agates from rocks mapped as Permian volcanics found near Vigne, near Frejus, near the Mediterranean coast, southern France.
1586Little Egypt, Utah, a flat and geological site at 38o 05' 00" N and 110o 37' 47" W, Garfield County, Utah, for collecting red agate that is about 8 miles south of Little Egypt, Utah (Simpson, 1975, p. 78, 79).
1587Little Jo Opal, Nevada, adv., Ray Duffield, Rocks and Minerals, v. 46, no. 5, p. 335.
1588Little Snake Lace Agate, Mexico, no description, adv., Cascade Lapidary, Lapidary Journal, v. 29, no. 10, p.1864. locality, orange, white, pink, brown, adv., Fire Mountain Gems, Lapidary Journal, v. 32, no. 10, p. 2142-2143.
1589Liver jasper, Virginia, a liver colored jasper with hematite spherules from between Fisher's Gap, and Front Royal, Madison, Page, and Warren counties, Virginia. See Rosenblohm (1955, p. 36). Lapidary Journal, v. 9, no. 1
1590Lizard Stone (=Lizard Jasper?), California?, banded, adv., Ray Caudle, Rock & Gem, v. 5, no. 8, p. 11
1591Llano Grande opalized wood, Columbia, adv., Dowell's, Edinburgh, Texas, Rocks and Minerals, v. 35, no. 3,4, p. 164.
1592Lobo Point, California, name used for a site in the Cady Mountains site that produced sagenitic agates but which does not appear in Geographic Names Information System.
1593Loma Pinta agate, Mexico, adv., Paso del Norte Minerals, Box 5042, Ascarate Sta., El Paso, Texas. Rocks and Minerals, v. 36, no. 1,2, p. 74. ...with only purples and reds...very consistent in banding, ...our new find of Loma Pinta agate comes from the same area as Coyamito, Laguna, and Gallegos. ...adv., Geode Industries, Lapidary Journal, v. 15, no. 1, p. 57. Zeitner (1967, p. 1394) suggested that these were found on the Moctezuma Ranch, [actually Rancho el Diablo (Cross, 1996, p. 81)] Chihuahua, Mexico, and Brad Cross (pers. comm., Sept. 23, 1995) supported this statement and stated that Loma Pinta agates are similar to Moctezuma agates except being of more pastel shades. Cross (1996, p. 81) stated that these came from about 15 miles east of Estacion Moctezuma, Chihuahua, Mexico, and he indicated in personal communication (1995) that they were generally similar to Moctezuma agates but ran a little larger and had more pastel coloring. Cross (1996, Table 1) listed the type locality as 30o 13' 34" N and 106o 12' 58" W, Chihuahua, Mexico.
1594Loma Pinta "Painted Hill" Agate, Mexico, ...compares to fines Laguna, adv., Paso del Norte Minerals, Lapidary Journal, v.14, no. 6, p. 475.
1595Lonely Butte, Kern County, California, a site recorded by Berkholz (1962, locality 2) and Strong (1971, p. 48, 49) that produced agatized reeds, palm wood, jasper and agate. agates & jasper, ôLonely Butteö agate & jasper are terms used by Schedenhelm (1972, p. 11) for agate and jasper found near Mojave, California. The site has produced agatized remains that include a cat-tail like plant called Typha. The area shown as "Lonely Butte" by Berkholz and Schedenhelm is called Brown Butte on the U. S. Geological Survey Topographic Maps. The butte is situated in the SE 1/4, sec. 3, T. 10 N., R. 11 W., Kern County, California, Bissell Quadrangle, U. S. Geological Survey, 7.5 minute series (Topographic). The summit of Brown Butte is situated at 34o 59' 08" N and 118o 01' 55" W. Unless the above agate and jasper have previously described in the literature as Brown Butte, the name "Lonely Butte" should be used as it currently has precedence. See also Johnson (1971, p. 18).
1596Long Canyon Agate, Utah, see Mansell, 1972, p. 890-902.
1597Lorenzo Banded Agate, Mexico, adv., Cab-n-Facet, Lapidary Journal, v. 21, no. 8, p. 979.
1598Lorenzo Nodules, Mexico, and gray banded agate, adv., Gem Center, U.S.A., Lapidary Journal, v. 20, no. 1, p. 16.
1599Loring Cove, Maine, a historic agate collecting area; see Gosse (1964, p. 193, 194).
1600Lost Canyon red moss agate, Wyoming, probably named for Lost Canyon, 43o 24' 42" N and 106o 59' 13" W, Natrona County, Wyoming, Roughlock Hill Map, U.S. Geological Survey 7.5' x 7.5'. No further details, adv., Allan Branham, Box 562, Lander, Wyoming, The Mineralogist, v. 15, no. 11, p. 593.
1601Lost Chance Canyon (sic) misspelling of Last Chance Canyon?, anon., 1978, Lapidary Journal, p. 1139
1602Lost Claim Agate Field, Imperial County, California, Berkholz (1953, p. 4-6, 8, 10) stated that this claim was staked in Imperial County, California, but not filed at the outbreak of World War II; the site subsequently became part of a U.S. Army tank training range, and the claim has not since been relocated.
1603Lost Hills scenic jasper, no locality, brown, red, dunes and hills, adv., Fire Mountain Gems, Lapidary Journal, v. 32, no. 10, p. 2142-2143.
1604Louisiana Agate, Louisiana, term used by Zeitner (1976, p. 962-970), synonym of Louisiana Banded Agate, which see.
1605Louisiana Agatized Coral, Louisiana, no description, adv., Ken Kyte, Lapidary Journal, v. 12, no. 5, p. 661.
1606Louisiana Banded Agate, Louisiana, from the Tangipahoa River, near Amite, in Southeastern Louisiana (Kyte, 1959, p. 72-84); ...translucent, ...banded, ...pastel, most from gravels of late Pleistocene age from Louisiana into Mississippi, Kyte (1961, p. 321-326). (Fortification), adv., Ken Kyte, Lapidary Journal, v. 9, no. 6, p. 582. This is the earliest published usage of name found to date, rkp. Carpenter (1963, p. 117) suggested the agates from the vicinity of Potosi and Malden, Missouri was the source area for the Louisiana Banded Agates, the latter having been transported south by streams of Pliestocene age. Carpenter pointed out several similarities in the two materials and suggested the in place material be called Potosi Agate for the Potosi Dolo-mite of Cambrian Age in which they formed. See Potosi Agate.
1607Louisiana Banded Agate, Louisiana, no description, adv., Ken Kyte, Lapidary Journal, v. 12, no. 5, p. 661.
1608Louisiana Jasper, Louisiana, no description, adv., Ken Kyte, Lapidary Journal, v. 12, no. 5, p. 661.
1609Louisiana C.I. Colored Agates, Louisiana, adv., Ken Kyte, Earth Science, v. 10, no. 6, p. 31.
1610Louisiana Opal, Louisiana, àbrown quartzite with purple glow, blue pin fire, adv., LA Opal Experience, Lapidary Journal, v. 46, no. 1, p. 325. See: Anon. (1992a, p 10) for illustration, short text.
1611Louisiana Palm Wood, adv. Double AW@ Rock Shop, Rocks and Minerals, v. 44, no. 3, p. 303.
1612Love's Arrows, see fleches d=amour.
1613Lucas Creek Carnelian (agate), Oregon, for Lucas Creek, near Lebanon, Oregon. See Bateman, E. S., 1946. A rockhound's vacation, The Mineralogist, v. 14, no. 5, p. 286-290. Geographic Names Information System does not show a Lucas Creek near Lebanon, Oregon so the name may be local or informal. See also Lebanon Carnelian.
1614Lucas Creek Eggs, Washington? no further details, adv., Bonney Lake Agate Shop, Route 1, Sumner, Wash., The Mineralogist, v. 14, no. 6, p. 318. Lucas Creek is situated at 46o 38' 12" N and 122o 46' 46" W, Lewis County, Washington, and is in the same area from which Chehalis Wood (which see) and agates have been recorded by Dake (1950, p. 61).
1615Lucero Agate, Mexico? no locality or description, adv., Aleta's Rock Shop, Lapidary Journal, v. 18, no. 11, p. 1237. Generally black and white amygdaloidal agates. Locality not known, cf. Coneto Agate, rkp.
1616Lucky Strike Thunder Eggs, Oregon, adv., Desert Agate and Novelty Shop, The Mineralogist, v. 21, no. 4, p. 186. For Lucky Strike Mine, 44o 31' 04" N and 120o 29' 46" W, Crook County, Oregon, Stephenson Mountain USGS 7.5' x 7.5' map. Ashby (1962) stated that this site yielded turtleback, moss, banded, and scenic agates. See also Jackson, Q. (1953, p. 80, 81) and Zeitner (1979, p. 1260-1272).
1617Lucky Strike Thunder Egg Nest, Oregon, adv., Dale and Ila Hammersley, Lapidary Journal, v. 8, no. 2, p. 116.
1618Ludlow Agate, Jasper, see Lavic Agate, Lavic Jasper.
1619Ludlow Moss Agate, California, brown, adv., Sequoia Gem and Mineral Shop, Lapidary Journal, v. 7, no. 3, p. 280.
1620Luna (moon) agate, Mexico, purple with white eyes, adv., Gorin's Gemarts & Rocks, Lapidary Journal, v. 15, no. 1, p. 65
1621Luna Agate, Mex., adv., B &H Rock Shop, Rocks and Minerals v. 36, no. 1,2, p. 104. Cross (1996, p. 83) stated that agate of this name has been mined from several localities near Terreantes and Mapula in Chihuahua, Mexico. The name is supposedly derived from the pattern's resemblance to the lunar surface, as it consists of numerous round spherulites in a slightly contrasting usually white matrix. Better varieties are deeper purple with white spherulites. The same name is used for agates from Durango, Mexico, and Luna County, New Mexico and has become almost generic.
1622Luna agate, New Mexico, see Dickerson, B. (1974) who suggested this material was called Laguna Agate by earlier workers and suggested the earlier name was the synony. For Luna County, Nerw Mexico?
1623Luna (moon) agate, Mexico, purple with white eyes, Mexico, adv., Gorin's Gemarts & Rocks, Lapidary Journal, v. 15, no. 1, p. 65.
1624Lunan Bay Railway Cutting, Scotland, historic locality in Angus, first noted as in Forfarshire (Heddle, 1901, p. 75, 76). The site produced agates from lavas of the Old Red Sandstone of Early Devonian Age, and it has been listed by Rodgers (1975, p. 84) who suggested the site produced agates from shingle and Macpherson (1989, p. 19).
1625Lune Cone Onyx, Tasmania, John Redmond Paper in review. See Lune River Agate, below.
1626Lune River Agate, Lune River, Tasmania, south of Hastings and near Dover, south coast of Tasmania, Australia. Sites are described as basalts with seams or nodules of agate by Myatt (1972, p. 419). May be same as lune cone onyxes. ProspecTas, the quarterly newsletter of Mineral Resources Tasmania, Issue 8, March, 1997 reported that the Mineral Resources Development Act of 1995 set aside areas for amateur collectors. This publication lists petrified fern and agate as materials from this site. See also Bacon and Bottrill (1977, p. 8, 9)
1627Luinga-Bheag Island, Scotland, historic locality in Inverness, Scotland, first recorded by Heddle (1901, p. 76) who stated that the violet colored agates came a N.N.W. dyke. Macpherson (1989, p. 19) stated that these agates came from non-volcanic sources.
1628Luray Jasper, Virginia, for Luray, 38o 39' 55" N and 78o 27' 35" W, Page County, Virginia, Luray Map, U. S. Geological Survey, 7.5' x 7.5'. a maroon jasper with epidote inclusions, found in streambeds outside of Shennandoah National Park (Macleod, 1955, p. 214). The presence of epidote suggests this material may really be Unakite rather than jasper.
1629Lutecite, a fibrous chalcedony characterized by inclined extinction and fibers that are seemingly elongated at about 30o to the c-axis of the crystal. See Michel-Levy and Munier-Chalmas (1890, 1892).
1630Lydian Stone, Australia, a black jasper, according to Myatt (1972, p. 288) and recorded from near Bathhurst, N.S.W., Australia. Shipley (1971, p. 117) suggested it is the same as basanite, a black quartz.
1631Lysite Agate, Wyoming, for Lysite, 43o 16' 05" N and 107o 41' 23" W and/or Lysite Mountain, 43o 26' 37" N and 107o 36' 32" W, Fremont County, Wyoming, Lysite and Cottonwood Pass USGS maps, 7.5' x 7.5'. Large banded and plume agate or continental sedimentary origin.

About the Agate Lexicon

The Agate Lexicon and glossary of amorphous and cryptocrystalline silica gems have been designed to be used in conjunction with the Agate Bibliography, which was compiled to be used by researchers, hobbyists, historians, lapidaries and other individuals which have an interest in these stones. Numerous localities are listed here but this does not imply that the sites are available for collectors or collecting. Many of the sites are historic, depleted, are on private property or are protected by legal leases or claims and some are now on protected sites such as parks, nature preserves, or historic areas. Wherever possible, stratigraphic details are listed, but the user must always refer back to the original citations. Map information has been derived from 7.5' x 7.5' topographic maps issued by the U.S. Geological Survey (USGS) and latitude and longitude have been derived mostly from Geographic Names Information System of the USGS.

Authors should not cite the Agate Bibliography or Agate Lexicon as a source in their published or unpublished works but should cite only those publications listed therein.

Named varieties of agates, jaspers, etc., have created special problems for both scientific researchers and historians. We have recognized at least two different usages of names. Some names appear to have geologic / historic validity, as they were described along with the lithology / geography of a region. Some names were introduced simply as trade names to boost sales of gem dealers. In the former case, the name will be followed by appropriate literary citation as to who first used the name and in what context. In the latter case, an advertisement (abbreviated adv.) is the first published record or public notice. We have tried to find the earliest citation in either case and the user should keep in mind that older citations unknown to us may exist. Advertisements are not cited to generate business but to simply give a historic source; many of the firms appearing in the citations are indeed no longer in existence.

Cited materials are generally only from accessible sources such as professional journals, magazines, hobbyist journals, open file reports of government agencies, newspapers, etc. Bulletins issued by local clubs and societies are generally not cited with the exception of those special publications that were actually made for public distribution.

Wherever possible, imagery of one or more specimens of named agate varieties, structures, patterns, etc. are provided. Images have been provided by several sources and are not to be utilized in other pages without the consent of the image owner.