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åç: Wikimedia Commons
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ã¢ãºã©ã€ãåéå®¶ã«ãšã£ãŠã®å®åççµè«ã¯æç¢ºã§ãã ãJacksons Crossroads ããã®ã¢ãºã©ã€ãããšããŠæäŸãããæšæ¬ã¯ãå匷ãæç®ã»åæç確èªã»ãããŠãªãé çé žå¡©é±ç©ããæ€èšŒæžã¿ã®è©å€ãšå ¬è¡šèšé²ãç³è±äžå¿ã®ãã®ç£å°ã«çµã³ã€ãã®ãã説æããåºæãã§ãŒã³ãæ·»ä»ãããŠããªãéããæ€èšŒãããŠããªããã®ãšããŠæ±ãã¹ãã§ãã## Locality Information
Search for specimens: View all azurite specimens from Jacksons Crossroads, USA
Jacksons Crossroads is in Wilkes County, Georgia, near the small community of Jacksons Crossroads and west-northwest of Tignall. The mine is commonly listed as the Jackson Crossroads Amethyst Mine or JXR Amethyst Mine. Published coordinates place it near 33.88694, -82.85722, a short distance west-southwest of Jacksons Crossroads and a few hundred yards north of Clifford Grove Church.
The deposit is a semiprecious gemstone occurrence rather than a copper mine. The old geological literature for the Central Savannah River Area describes amethyst near Jacksons Crossroads in medium-grained granite, with small amethyst crystals projecting from vein walls exposed along a gullied woods road. Later collector and specimen literature emphasizes the more productive modern workings: quartz and amethyst crystals recovered from clay-rich pockets and decomposed host rock in the Georgia Piedmont.
The broader geological setting is the Piedmont of east-central Georgia, within the Appalachian crystalline terrane. Quartz veins, pods, and vuggy quartz bodies are widespread in the region. The Jacksons Crossroads material became especially important because it produced not merely pale amethystine vein quartz, but highly aesthetic specimens: broad, lustrous amethyst crystals, flower-like groups, doubly terminated crystals, and rare matrix pieces in which purple amethyst sits on colorless to white quartz.
The modern Jacksons Crossroads occurrence was reported as discovered in 1988, and significant production followed in the early 2000s. At the 2005 Tucson Gem & Mineral Show, hundreds of fine JXR specimens were offered, helping establish the localityâs reputation beyond the southeastern collecting community. The mineâs best pieces soon entered major private collections, dealer inventories, magazine articles, and public displays, including the American Mineral Treasures era of American locality collecting.
Collecting access has never been equivalent to a public roadcut or open public mine. The property is private, and access has varied over time through ownership, organized digs, commercial operations, club trips, and periods of closure or limited availability. Any collector considering a visit should verify access directly with the current landowner or authorized mine contact before traveling; the mere presence of historical directions or old collecting reports is not permission.ãžã£ã¯ãœã³ã»ã¯ãã¹ããŒãºã«ã¯ãã¢ãºã©ã€ãã®æ€èšŒæžã¿æ¡æå±¥æŽã¯ãããŸããã
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Jacksons Crossroadsç£ã¢ãºã©ã€ãã«ã€ããŠã¯ã published ããã³ããŒã¿ããŒã¹èšé²ã§ç¢ºèªã§ãã locality ã«å¯ŸããŠä¿¡é Œã§ããå±æç¹æã®ç¿æ§ãç¹å®ããããšã¯ã§ããŸãããã¢ãºã©ã€ãã¯ãã® locality ã«å¯Ÿããæ€èšŒæžã¿çš®ãšããŠã¯èªå®ãããŠããããJacksons Crossroads ã®ã¢ãºã©ã€ãç¿æ§ãçµæ¶ãµã€ãºãè²ã®å€ç°ããããªãã¯ã¹ãšã®é¢é£ããã±ããåããŸã BisbeeãChessyãTsumebãKerrouchenãMilpillasããã®ä»ã®å®åšããã¢ãºã©ã€ãç£å°ã«è²ãå質éå±€ãšåçã®ç¢ºç«ãããåºæºã¯ãããŸããã
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ããéè²ã®æšæ¬ã Jacksons Crossroads ã¢ãºã©ã€ããšããŠæç€ºãããå Žåãã³ã¬ã¯ã¿ãŒã¯ãã®éè²ãæ¬åœã«äœãããŠããã®ããåãã¹ãã§ããã¢ã¡ãžã¹ãã¯ç¹å®ã®ç §æäžã§é玫è²ã«èŠããããšããããJXR ã®ã«ãã¿ãŒãæ¡æè ã¯é«å質ãªã¢ã¡ãžã¹ãã®å åŠå¹æãšããŠãéãéå ããšãã衚çŸãçšããããšããããŸããããã¯ã¢ãºã©ã€ãã§ã¯ãããŸãããçã®ã¢ãºã©ã€ãã¯é çé žå¡©ã§ãã¯ã©ãŒãããæããããéåžžã«ç°ãªããã©ãžã§ãã·ã¹ãæã¡ãéåžžã¯ãã©ã«ã€ããä»ã®é žåé é±ç©ãšçµã¿åãããŠèŠãããŸãã## Collector Notes
äž»ãªçåœã®åé¡ã¯ç£å°ã®ç¹å®ã§ãããazurite, Jacksons Crossroads, Georgiaããšèšãããã©ãã«ã¯ãå€ãã³ã¬ã¯ã·ã§ã³ã®ã©ãã«ãçŽæ¥ã®é±å±±åºæã®æç®ããããŠå¯èœãªãåæç確èªã«ãã£ãŠè£ã¥ããããªãéããçããããšã¿ãªãã¹ãã§ããæšæºã®ç£å°èšé²ã¯ãJackson Crossroads Amethyst Mineã®éèŒç³ïŒazuriteïŒãæ¯æããŠããŸããã
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åžå Žã«ãããJacksons CrossroadséèŒç³ã®çã®å ¥æå¯èœæ§ã¯ãäºå®äžæªç¢ºèªãšã¿ãªãããã¹ãã§ãããã ããJacksons Crossroadsã¢ã¡ãžã¹ãã¯ãå€ãçºèŠåãç§çã³ã¬ã¯ã·ã§ã³ã®ãªãªãŒã¹ããã£ãŒã©ãŒåšåº«ããªãŒã¯ã·ã§ã³ã®ã¢ãŒã«ã€ããæææ°ãã«æµ®äžããããŒã¹ãéããŠãã³ã¬ã¯ã¿ãŒåžå Žã§åŒãç¶ãç®ã«ããããšãã§ããŸããæãéèŠã®é«ãã¢ã¡ãžã¹ãäŸã¯ãè²ãæ·±ã玫ã§ãã·ã£ãŒããªã¬ã©ã¹ç¶ã®ãã¡ã»ãããå®ç³è³ªæãçµç«¯ã®å®å šæ§ãå±ç€ºæã®å®å®ããåãããããŠç¹ã«çœãç³è±ãããªãã¯ã¹ã«å¯ŸããŠçŽ«è²ã®çµæ¶ãæã€ãã®ã§ãã## Stories & Field Notes
ãžã£ã¯ãœã³ãºã»ã¯ãã¹ãããºã®ç©èªã¯ããã easily have remained just another Piedmont amethyst occurrenceã®ããã«ãä»ã® Piedmont ã¢ã¡ãžã¹ãã®çºçäŸã®äžã€ãšããŠçãŸã£ãŠããŸããããªå Žæããå§ãŸãããžã§ãŒãžã¢å·ã®å€ãé±ç©è³æºèª¿æ»ã¯ããžã£ã¯ãœã³ãºã»ã¯ãã¹ãããºè¿èŸºã®äžç²ã®è±åŽå²©äžã®ã¢ã¡ãžã¹ãããæš¹æšã®é沿ãã®å²ãç®ã®å£ããå°ããªçµæ¶ãçªãåºããŠããæ§åãšããŠèšé²ããŠãããããã¯æ§ããã«èããããããããªãã屿çãªçºçããŸããŸãã®çµæ¶ãè¯å¥œãªçµç«¯éšãçŸå Žå°è³ªåŠè ãæ°å€ã®èšé²ã®äžã«ãã¡ã€ã«ãããããªç®æã®äžã€ã ãããããåãå°åž¯ã¯åŸã«ãçå£ãªã³ã¬ã¯ã¿ãŒããç±³åœã®æé«ã®ã¢ã¡ãžã¹ãã®ã²ãšã€ããšè«ããæšæ¬ãçã¿åºãããšã«ãªãã
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Mindat ããŒã«ãªãã£ããŒãž: Jackson Crossroads Amethyst Mine, Jacksons Crossroads, Wilkes County, Georgia, USA â äž»èŠãªãªã³ã©ã€ã³ããŒã«ãªãã£åç §å ãæ€èšŒæžã¿ã®é±ç©çŸ€ã瀺ããããŒã«ãªãã£åº§æšãå¥å JXR Amethyst Mineãã®ã£ã©ãªãŒèšé²ãåºçåç §ãå«ãã
Bowling, Ryan L.; Moore, Rodney; Ledford, Terry. âThe Jacksonâs Crossroads Amethyst Deposit, Wilkes County, Georgia.â The Mineralogical Record, 36(6), 479â486, 2005. â ããŒã«ãªãã£ã®ã¢ã¡ãžã¹ãçç£ãçºèŠå²ãçµæ¶å質ãè²ããµã€ãºã2000幎代åé ã®æšæ¬ output ã«é¢ããéèŠãªçŸä»£èšäºã
Hurst, Vernon J.; Crawford, Thomas J.; Sandy, John. Mineral Resources of the Central Savannah River Area, Vol. 1. Georgia Geologic Survey Branch, reprinted 1981. â äžå€®ãµãã³ãå·å°åã®å°è³ªèª¿æ»ãJacksons Crossroads è¿ãã®ã¢ã¡ãžã¹ãã®åæèšè¿°ãå«ããäžç²ã®è±å²å²©ã«ã€ããŠã
Geffner, Paul. âThe Treasure Chest Pockets: An Update on the Jacksons Crossroads Amethyst Mine, Wilkes County, Georgia.â Rocks & Minerals, 83(6), 550â552, 2008. â èå㪠JXR ã¢ã¡ãžã¹ããã±ããçç£ã®çŠç¹ãçµã£ãæŽæ°ã
White, John S. âMineral Mysteries: The Jacksons Crossroads Enigma, Wilkes County, Georgia.â Rocks & Minerals, 88(5), 476â479, 2013. â ããŒã«ãªãã£ã®ç°åžžãªé±ç©åŠççåãšã³ã¬ã¯ã¿ãŒã®é¢å¿ã«é¢ããå ¬éèšè°ã
Merkel, Ian S. âCollectorâs Note: Lilac-Colored Amethyst âFlowersâ and Other New Finds from Jacksons Crossroads, Wilkes County, Georgia.â Rocks & Minerals, 90(5), 454â458, 2015. â åŸå¹Žã® JXR çºèŠãèšé²ãç³è±äžã®ãªã©è²ã¢ã¡ãžã¹ãâè±âæšæ¬ãå€è³ªè±åŽå²©åºè³ªãå«ãã
Wikimedia Commons: Quartz-122889.jpg â Rob Lavinsky, iRocks.com äœæã® Jacksons Crossroads ã¢ã¡ãžã¹ãã¯ã©ã¹ã¿ãŒïŒ6.9 à 5.9 à 5.6 cmïŒã®ãªãŒãã³ã©ã€ã»ã³ã¹ç»åèšé²ã
Wikimedia Commons: Quartz-195265.jpg â 2005幎æ¡éã® Jacksons Crossroads ã¢ã¡ãžã¹ãæšæ¬ã®ãªãŒãã³ã©ã€ã»ã³ã¹ç»åèšé²ã
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Digital Library of Georgia: Mineral Resources of the Central Savannah River Area, Vol. 1 â ãŠã£ãŒã¯ã¹é¡ã®å°åå°è³ªèæ¯ãšãžã£ã¯ãœã³ãºã¯ãã¹ããŒãä»è¿ã®åæã®ã¢ã¡ãžã¹ãçºçããŒãã
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