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Les Farges ã®æšæ¬ãç¹ã«è©äŸ¡ãããã®ã¯ãé±å±±ã®çŸä»£æ¡éçªãçãã£ãããšã§ãããã®ç£å°ã¯äžè¬ã«ã¯1975â1981幎ã®ã¯ã©ã·ãã¯ãšããŠæ±ããã1981幎ã«éå±±ããŸãããããã®ç£åºã¯ååã«å¹ ããããããã€ãã®èªèå¯èœãªã¹ã¿ã€ã«ã確ç«ããŸããïŒé»è²ããã£ãããæã€äžžå€ªã®ãããªãæšœãç¶çµæ¶ãæ·±ãã»ãŒåäžãªç·ã®ãã£ããããæšæ¬ãéªã®çœãã垯ã³ãæ¹è§£ç³ã®äžã®è¶è²ç·è²ã®çµæ¶ãåæã®ããã¢ã«ãã¡ã€ãã®äžã«çŸããé»è²ç·è²ã®éç¶æé·ããããŠæ©è²ããè¶è²ã¿ã垯ã³ããŽã«ãã§ãããšã®çããå ±çãå匷ãäŸã¯éãªã³é žå¡©ãšããŠã®å¯åºŠãšééãåããŠããŸãããèŠèŠçã«ã¯æ€ç©åŠçã«æããããããšãå€ããããªããºãç¶ã®è±åºãäžžã¿ã垯ã³ãæ¿ç¶ãéŸä¹³ç³ç¶ã®å€ç®ãæš¹èå æ²¢ã垯ã³ãçµæ¶ã®éå£ãšãã£ãç¹åŸŽã瀺ããŸããã³ã¬ã¯ã¿ãŒã¯ãŸããè²ã®é£œååºŠãæ¬ ãã®ãªãçµç«¯ããããŠèŠåããã€ãã«ã»ãã¡ã«ãžã¥æ§åŒãéèŠããŸããæã奜ãŸããæšæ¬ã¯ãé«ãçµæ¶èŠæéãšçµæãçµã¿åããã£ããã®ã§ãïŒé»ç«¯ã®ãªãªãŒãè²ã®æšœç¶çµæ¶ããã©ã€ãã瞊æããã¯ã©ãŒãäžã«èç·è²ã®ã¹ãã¬ãŒãèŠããããã®ããããã¯ãŠã«ãã§ã³ãµã€ãããã€ãã¢ã«ãã£ããã®äžã«èŒã£ãŠãããã®ãæå·ã¯äžè¬çã§ãéãå®å šãªçµæ¶ããã¬ãã¢ã ãçãããšãå€ããç¹ã«å€ãã©ãã«ã®ãã®ããæ¬§ç±³ã®èåãªã³ã¬ã¯ã·ã§ã³ã«é¡ããæšæ¬ã«ã¯ããããåŸåã匷ããªããŸãã## ç¹éæšæ¬
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Les Farges Mine ã¯ãããŒãã«ïŒã¢ãããŒãçã¯ã¬ãŒãºçã®ãŠã»ã«è¿ãã«äœçœ®ããå€ãæšæ¬ã©ãã«ãæç®ã«ã¯æŽå²çã«ãªã ãŒãŸã³ãšããŠèšãããŠããŸããMindat ã¯ãã®é±å±±ã Les Farges Mine, Ussel, CorrÚze ãšèšé²ãã座æšã¯ãããã 45° 32' 29" N, 2° 20' 37" E ã瀺ããæ¡æãããªããªã£ãé±å±±ãšããŠäžèЧããŸããå€ããã©ã³ã¹èªè¡šèšããã£ãŒã©ãŒã®ã©ãã«ã«ã¯ãMine des FargesããDes Farges MineããLes Farges, UsselããŸãã¯åã«ãUssel, CorrÚzeããšèªãŸããããšããããŸãã
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çŸä»£ã®é±å±±ã¯ãé±ç³ãããæšæ¬ã§ç¥ãããŠããŸãã1970幎代ã«éåããã1981幎ã«éåããŸãããäžççã«åé«ãå°æ¹ã§ãããçãçç£æéãšããŠé©ãã¹ããã®ã§ããåè¡ç©ããã³ãã£ãŒã©ãŒã®æ å ±ã¯ãäž»ãªãã€ãã¢ã«ãã¡ã€ãçç£ã 1975â1981 幎ãšããããšãå€ãã§ããããã©ã³ã¹ã®ã³ã¬ã¯ã¿ãŒã®ã¡ã¢ã«ã¯ 1970幎代åé ãã1980幎代åé ã«ãããŠããã€ãã¢ã«ãã¡ã€ããçç£ããããšèšè¿°ãããŠããŸãããããã«ãããLes Farges ã¯çŸä»£ã®ã¯ã©ã·ãã¯ã®çããåé¡ã«å±ããŸããäœäžçŽã«ããããã³ã¬ã¯ã·ã§ã³ãäžä»£ããšã«äŸçµŠããå€ãå°æ¹ãšããããã¯ãåè¶ããæšæ¬ã®æ¿å¯ãªçžè£ãšããŠäœçœ®ã¥ããããŠããŸãã
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Les Farges pyromorphite is not a locality where dyed or routinely treated material is a central documented problem. The more realistic authenticity concern is provenance. Pyromorphite from other classic localitiesâespecially French or European material with green to yellow barrel habitsâcan be mislabeled by accident, and collectors have discussed the difficulty of separating Les Farges from other French pyromorphite localities when labels are missing or vague. A good Les Farges attribution should be supported by habit, matrix, and ideally provenance: white baryte or quartz matrix, olive-to-brown barrels with yellow tips, hoppered terminations, or known old labels are all helpful clues.
Condition is the major practical issue. Pyromorphite has only moderate hardness and the individual crystals are brittle; prominent barrel crystals commonly lose terminations, and acicular sprays can be rubbed or flattened. On yellow-tipped specimens, damage is especially visible because a broken crystal interrupts the color-zoned cap pattern. Iron-oxide coatings on the back or matrix are normal for many pieces and should not be confused with damage, but heavy staining can obscure luster.
Because the mine closed in 1981, fine specimens are finite old stock. Small examples and incomplete old pieces still appear regularly enough to be obtainable, but high-grade Les Farges pieces with sharp crystals, strong green or yellow-green color, baryte contrast, and no obvious bruising are increasingly competitive. Recent public dealer and auction records show a wide spread: modest old classics can sell in the low hundreds, attractive small cabinets have brought several hundred dollars, and larger or exceptional French dealer specimens have been listed in the thousands of euros. A large, pristine, strongly colored, well-composed Les Farges piece should be treated as a serious European classic rather than just another pyromorphite specimen.
Handle and store specimens with care. Keep them out of acidic cleaning solutions, avoid ultrasonic cleaning, and do not attempt aggressive washing of oxide-coated matrix. As a lead chlorophosphate, pyromorphite should not be ingested or abraded; normal display handling is safe, but wash hands after handling and keep powdery fragments away from children and pets.## é±ç©åŠçèšé²ãšåºçç©
A. Brousse, âFamous Mineral Localities: The Les Farges Mine [France],â The Mineralogical Record, 13(5), 261â268, 1982 â é±åºã®é±ç©çµæãšã³ã¬ã¯ã¿ãŒã®éèŠæ§ã«é¢ããŠãè±èªåã§ã®å€å žç代衚 locality èšäºãšããŠåŒçšãããŠããäž»èŠæç®ã
Collectif, âLes minéraux de la mine des Farges, Ussel (CorrÚze),â Le RÚgne Minéral, Hors-Série XV, 2009 â locality ã«é¢ããäž»èŠãªãã©ã³ã¹èªç¹å¥å·ã
Le RÚgne Minéral Hors-Série 2009 listing, Un caillou dans la poche â 84ããŒãžã®ç¹å¥å·ã®æçšã³ã³ãã³ãèŠçŽãBa-Pb-Ag ãããžãããé±å±±ã®æŽå²ãããã¢ã«ãã¡ã€ããéå€çºèŠã®ã»ã¯ã·ã§ã³ãå«ãã
Mindat locality page for Les Farges Mine â 座æšãæŸæ£é±å±±ã® statusãé±ç©ãªã¹ããã³ã¢ãã£ãã£ãŒãºãäž»èŠåèæç®ã
Mindat occurrence page for pyromorphite from Les Farges Mine â æ¬ locality ãäžçã¯ã©ã¹ãšããããã¢ã«ãã¡ã€ãã®èšé²ãšãåçããŒã¹ã®é¢é£ïŒç¹ã«éæ¶ç³ãç³è±ããŠã«ãã§ãã€ããæ¹è§£ç³ãæ¹éé±ããã¡ã¿ã€ãïŒãèŠçŽã
Richard Gunter Catalogue: Pyromorphite France â 150ã¡ãŒã¿å±€ã® Stope 290N ããã®ç¹ã«å ·äœç㪠Les Farges æšæ¬ãå«ãã9 à 4 à 4 cm ã®éæ¶ç³è¢«èŠã® olive-green ããã¢ã«ãã¡ã€ãçµæ¶ãé»ãããã®ç«¯éšã2 é¡ã®ãªã¬ã³ãž-èµ€è²ã®ãŠã«ãã§ãã€ãçµæ¶ã
HyperPhysics / Georgia State University: Smithsonian pyromorphite display examples â ã¹ããœãã¢ã³èªç¶å²åç©é€šã«å±ç€ºããã Les Farges ã®ããã¢ã«ãã¡ã€ã幟ã€ããèšé²ãçŽ 8 à 10 cmã12 à 24 cmã5 à 8 cmã8 à 8 cm ã®äŸãå«ãã
MineralAuctions: pyromorphite ex Sorbonne and Gary Hansen collections â Sorbonne åç©é€šããã³ Gary Hansen ã³ã¬ã¯ã·ã§ã³ç±æ¥ã® Les Farges ãããã¥ã¢ïŒ5.0 à 3.7 à 2.7 cmïŒã®ç«¶å£²èšé²ã## Videos & Media
âPyromorphite with Baryte from Les Farges Mine (Des Farges Mine), Ussel, Franceâ â Fabre Minerals â Rotating video of a 17 x 17 x 7.5 cm deep-green pyromorphite on baryte specimen, catalog ETR47AQ1.
URL: https://vimeo.com/855704497
âPyromorphite, Mine des Farges, Ussel, CorrÚze, Limousinâ â Les Minéraux â Short specimen video accompanying a sold French dealer listing for green barrel and acicular pyromorphite on quartz-rich brown matrix.
URL: https://www.les-mineraux.fr/wp-content/uploads/2022/09/video-d011c071-47d9-4152-8fd9-e00f323a5af6-1662210838.mp4
âPyromorphite on Baryte â Les Farges mineâ â Barnebys auction media â Auction-linked specimen video reference for yellow-green pyromorphite âkegsâ cascading on white baryte, ex Rollet family collection.
URL: https://vimeo.com/1128133954/c1b2ba7c85