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åç: Wikimedia Commons / Géry Parent
Touissit ãéèŠã§ããçç±ã¯ãçŸããã ãã§ãªãååŠã«ããããŸããåéçŽ æã®å€ãã¯ããããžãã€ãâãã¡ã¿ã€ãâããã¢ã«ãã¡ã€ãã®çµæè¿åã«ãããVO4ãAsO4ãPO4 ãè²ãåœåãè€éã«ããããšããããŸããTouissit ã¯ã arsenic-bearing ãããžãã€ããšæã匷ãé¢é£ä»ããããŠããã¢ããã³ã®ç£å°ã®ã²ãšã€ã§ãæµéæã«ã¯å€ãå€çš®åãendlichiteãã§ãã°ãã°èŠãããŸããçŸåšã®é©åãªã©ãã«ã¯ããæ éã§ãåæãšã³ã¬ã¯ã¿ãŒçšèªã«äŸåããŠãããããžãã€ãããç çŽ å«æãããžãã€ããããŸãã¯ä»¥å endlichite ãšåŒã°ããŠãããããžãã€ãããšãªãããšããããŸãã
å°è³ªåŠçã«ã¯ããã®ç£å°ã¯ã¢ããã³æ±éšã® Touissit- Bou Beker é±å±±å°åž¯ã«å±ããã«ã«ãããŒããå«ãäž»é±èã®éã»äºéã»éãå«ãé±åºãšããŠçºå±ããŸãããéé±ãšéé é±ãå«ãé±ç³ã®é žåã¯ã次ã®ãããªäºæ¬¡é±ç©ã®åè¶ããçµæãçã¿åºããŸããïŒã¢ã³ã°ã©ã€ããã»ãªãŠã ç³ãåéç³ããŽã«ãã§ãã€ãããããžãã€ããã¢ãã©ã ã¿ã€ããã¹ã¯ãã€ã¶ã€ããã¹ããœã³ç³ãç³èãããã³ä»ã®çš®ãããã®ãããžãã€ãã¯ãé žåããé-ãããžãŠã -ç çŽ ã®ä»åž¯äœã®äžéšã§ãããåç¬ã®ç£åºã§ã¯ãããŸããã

åç: Wikimedia Commons / Didier Descouens
æŽå²çã«ã¯ããã®å°åºã¯éã»äºéã»é ã»éã®æ¡æã®ããã«éãããŠããŸããããã³ã¬ã¯ã¿ãŒã«ãšã£ãŠã®æè¯ã®ææã¯åŸã«èšªããæ·±ãé žåããäœæ¥ã§äžçã¯ã©ã¹ã®äºæ¬¡é±ç©ãçã¿åºããŸããã1970幎代åŸåãã1980幎代åé ã«ãããŠãTouissit ãããžãã€ãã¯ãã¢ããã³ç¬èªã®ã¹ã¿ã€ã«ãšããŠã®ã¢ã€ãã³ãã£ãã£ã確ç«ããŸããïŒMibladen ã®èµ€ããããžãã€ãã§ã¯ãªããå æ²¢ã®ããé·å圢ã®çµæ¶ã§ãæãããªé»è€è²ããããã³ãºè²ã®è²èª¿ãæã«ã¯é»ãã¢ãã©ã ã¿ã€ããã¹ã¯ãã€ã¶ã€ãäžããŸãã¯æ·¡è²ã®çé žå¡©åºè³ªäžã«èŠãããŸããã³ã¬ã¯ã¿ãŒã¯ãŸãã·ã£ãŒãããå®ç§ãªçµç«¯ãæ£çŽãªç£å°ã®ç¹åŸŽãéèŠããŸããæã䟡å€ã®é«ãæ¬ çã¯ããããªãã¯ã¹äžã«çŸããç«ã€å è§åœ¢çµæ¶ã圢æãããã¹ã¿ã€ã«ã«çžå¿ãã匷ãå æ²¢ãã¯ã£ãããšãããŸãŒãã³ã°ãè²ã®å¯Ÿæ¯ãèŠãããæšéšã®ãšããžãçµç«¯é¢ã®ç£šèãå°ãªããã®ã§ãã倧ããªçµæ¶ã¯é«ãè©äŸ¡ãããŸãããååŠçµæãšåºææ å ±ãåæ§ã«éèŠã§ããå€ãã©ãã«ãåæããŒãããŸãã¯ä¿¡é Œã§ããã³ã¬ã¯ã·ã§ã³å±¥æŽã¯éèŠãšãªãåŸãŸãããã¥ã¯ã·ããïŒTouissitïŒç£ç©ã¯é·ãéè é žæ°Žé ïŒããã¢ã«ãã¡ã€ãïŒãšæ··åãããã©ããªã³ã°ãäžè²«ããŠããªãããšããã£ãããã§ãã## ç¹éæšæ¬
Search for specimens: View all vanadinite specimens from Touissit, Morocco
Touissit lies in the Touissit-Bou Beker mining district, Jerada Province, Oriental Region, eastern Morocco, south of Oujda and close to the Algerian border. The district is a semi-continuous ENE-WSW belt of carbonate-hosted Mississippi Valley Type lead-zinc deposits, roughly 16 km long and locally from about 100 m to 1,200 m wide. Its principal deposits, from west to east, are Mekta, Beddiane, Touissit, and Bou Beker, with associated shafts, pits, and historically separated localities such as Shaft IX and the Zellidja Mine.
The ore bodies are epigenetic, strata-bound replacements in dolomite. Mineralizing fluids were hot and saline, and the main sulfide assemblage consisted chiefly of galena and sphalerite with pyrite or marcasite and lesser copper-bearing minerals such as chalcopyrite and bornite. In the oxidized zones, those sulfides broke down to produce the lead carbonates, sulfates, vanadates, molybdates, arsenates, and copper carbonates that made Touissit famous among collectors.
The dominant ore textures are breccia-related. Mineralized breccias include crackle, mosaic, rubble, and rock-matrix breccias cemented by dolomite, with ore filling the spaces between angular fragments of host dolostone. Gangue minerals include dolomite, ferroan dolomite, calcite, minor quartz, and locally abundant secondary gypsum. This porous, fractured carbonate architecture helped create the open-space conditions needed for well-formed secondary crystals, including vanadinite.
Mining in the broader Bou Beker-Touissit area was already the subject of mid-20th-century economic-geology work, and the districtâs production history extends across most of the 20th century. Between 1926 and 2002, the Touissit-Bou Beker-El Abed group produced roughly 70 million tonnes of ore grading about 4% lead, 3.5% zinc, less than 1% copper, and around 120 g/t silver. The Compagnie MiniÚre de Touissit operations closed in 2002; later production has been small-scale and artisanal.
For collectors, the key specimen era began not with the earliest mining but with access to oxidized zones in the late 1970s. That period brought fine azurite, anglesite, cerussite, wulfenite, vanadinite, and rare lead minerals into international collections. Touissit vanadinite from this era is now essentially old-stock material. Specimens continue to appear through collection dispersals, dealer inventories, and auctions, but significant new production of the classic arsenic-bearing barrel-crystal style has not been a regular feature of the modern market.çŸå Žã®ã¢ã¯ã»ã¹ã¯ãæ°è»œãªæ¡éã§ã¯ãªããå¶éãããæ¡æã¢ã¯ã»ã¹ãšèŠãªãããã¹ãã§ããå°åºã«ã¯æ§åéã shaftãäžå®å®ãªé žåå°ç€ãå«ãŸããŠãããé©åãªåå°ææè ããã³é±ç©æš©ææè ã®èš±å¯ãäžå¯æ¬ ã§ããã»ãšãã©ã®ã³ã¬ã¯ã¿ãŒã«ãšã£ãŠãæ£èŠã®ååŸã¯ç¢ºç«ããããã£ãŒã©ãŒããªãŒã¯ã·ã§ã³èšé²ãæ§ã³ã¬ã¯ã·ã§ã³ãããã³ä¿¡é Œã§ããã©ãã«ãæã€æšæ¬ãéããŠè¡ãããŸãã## Touissit, Marokoã®ãããžãã€ãã®ç¹åŸŽ
Touissitã®ãããžãã€ãã¯ãé·ãå è§æ±ç¶ã®çµæ¶ãšåãçç¶ã®çµæ¶ã§æãããç¥ãããŠãããMibladen ã«äžè¬çã«é£æ³ãããè °é«ã§ã¬ã©ã¹è³ªã®æããèµ€è²ã®å è§åœ¢æ¿ç¶çµæ¶ãšã¯ç°ãªããåã ã®çµæ¶ã¯åçµç«¯ãŸãã¯äºéçµç«¯ã§ããããšããããæé«åã¯éãããªãºã é¢ãå®å šãªåºåºçµç«¯éšãå æ²¢ã®ãã衚é¢ã瀺ããçµæ¶ã®çæãšè¡šé¢ã³ãŒãã£ã³ã°ã«ãã£ãŠã¯çµ¹ã®ãããéå±çããŸãã¯æ·¡ãééãã®ããã«èŠããã
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çµæ¶ã®å€§ããã¯å€§ããå€åãããåžå Žã®æšæ¬ã®å€ãã¯æ°ããªã¡ãŒãã«ããçŽ1ã»ã³ãã¡ãŒãã«ã®çµæ¶ã瀺ããããè¯ãæ§åšåº«ã®ãã£ããããåã¯çŽ1.3ã2.2 cmã®çµæ¶ãæºããããšããããTouissitç£ç©ã®å ¬è¡šãããèšè¿°ã«ã¯ãé 質ã¢ãã©ããµã€ããšé¢é£ããã¯ãªãŒã è²ãçœãè¶è²ã®ãŸãŒãã³ã°çµæ¶ãçŽ3 cmãŸã§ãããšèšãããããã®ãµã€ãºã®çµæ¶ã¯ç£å°ã«ãšã£ãŠéèŠã§ããããšããžã®æ©èãææ²ãçã®çµç«¯åè³ªãæ éã«è©äŸ¡ãããã¹ãã§ããã
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æè¯ã®Touissitãããžãã€ãæšæ¬ã¯ãããã€ãã®ç¹åŸŽãçµã¿åãããŠãããééããªãçç¶ãŸãã¯é·ãå è§åœ¢ã®çãè¯å¥œãªäžæ¬¡å ã«ãã¬ããžãæãªãããŠããªãçµç«¯éšã匷ãå æ²¢ãé åçãªè²ã®ãŸãŒãã³ã°ãå®å®ããæ§å±åºæã§ãããæšæ¬ãèµ€ã§ããå¿ èŠã¯ãªããå®éãæé«ã®TouissitããŒã¹ã¯ç¹ã«èµ€ãã¢ããã³ç£ãããžãã€ããšã¯ç°ãªãããã«èŠããç¹ãæãŸãããšããæå³ã§é«ãè©äŸ¡ããããæ·¡ããªãªãŒãè²ããã¿ãŒå¡ç³è²ãããã³ãºãã¯ãªãŒã è¶è²ã®çµæ¶ã¯ããã®ç£å°ã®ã¢ã€ãã³ãã£ãã£ã®äžéšã§ããã## Collector Notes
Touissitã®ãŽã¡ããã£ãã€ãã®äž»ãªæ¡é課é¡ã¯ãèå¥ãšã©ããªã³ã°ã§ããã¯ã©ã·ãã¯ãªçºèŠåäœã¯ãè²ãšæšœç¶ã®çµæ¶åœ¢ãããã¢ã«ãã¡ã€ãã«äŒŒããããæã«ããã¢ã«ãã¡ã€ããšããŠè²©å£²ãããããšããããã»ãšãã©ã®åéå®¶ãæåŸ ããèµ€è²ã®ãŽã¡ããã£ãã€ããããããã¢ã«ãã¡ã€ãã«è¿ããšèŠãªãããããšããããŸãããã®åŸã®åæã§ã¯ããããã®å€ãããŽã¡ããã£ãã€ãã§ãããäžè¬ã«ãçŽ å«æã䌎ãããšã瀺ãããŸããããendlichiteããšããå€ãåç§°ã¯ã©ãã«ããã£ãŒã©ã®èª¬æã«ä»ãçŸããŸãããå¥åã®çŸä»£çš®åãšããŠã§ã¯ãªãããçŽ ãå«ããŽã¡ããã£ãã€ãã®å€çš®åãŸãã¯æŽå²ççšèªãšããŠæ±ãã®ãæè¯ã§ãã
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Touissitã®ãŽã¡ããã£ãã€ãã«ã¯ç¹å¥ãªåŠçã¯ã誀ã©ãã«ã®ããã«èªèãããæ¡åã¹ããŒãªãŒã®äžéšã«ã¯ãªã£ãŠããŸãããããçŸå®çãªãªã¹ã¯ãšããŠã¯ãç£å°ã®èª€ããçš®ã®èª€ãããendlichiteãã®éä¿¡çãªäœ¿çšãã¢ããã³ç£ãŽã¡ããã£ãã€ãã®"Mibladen"ãªã©ä»ã®ã¹ã¿ã€ã«ãšã®æ··åã§ããæšæ¬ã¯éãå«ãé±ç©ãšããŠæ±ãããã£ã¹ãã¬ã€ãšãªã¢ãžã®åãé¿ããæ±ã£ãåŸã¯æãæŽããäžèŠãªæ©èãé床ãªã¯ãªãŒãã³ã°ãé¿ããŠãã ããã
åžå Žã§ã®å ¥ææ§ã¯éãããŠããŸãããå®å šã«ã¯çç¡ã§ã¯ãããŸãããã¯ã©ã·ãã¯ãªååã®ã»ãšãã©ã¯æ§èµããæµéãã2020幎代ã®ãªãŒã¯ã·ã§ã³èšé²ã§ãTouissitã®ãŽã¡ããã£ãã€ããå°ããªãã£ããããããã£ããããããããŠå€§åãã£ããããæšæ¬ãšããŠäŸç¶ãšããŠçŸããŠããããšãåãããŸããäŸ¡æ Œã¯çŸèгãç£å°æ å ±ãçµæ¶ãµã€ãºãåå®ã®èªä¿¡åºŠã«ãã£ãŠå€§ããå€åããŸããæ§ãããªæ§-stockäŸã¯æã«å ¥ããããããšããããŸãããç¡å·ã§ãçŽ å«æã®æšœçµæ¶ãåãã倧ããªæšæ¬ã¯ãéåžžã®ã¢ããã³ç£èµ€ãŽã¡ããã£ãã€ããããããªãåžå°ã§ãã## Stories & Field Notes
æãé·ãèªãããŠãã Touissit ã®è©±ã¯ã身å ã®èª€èªã®ç©èªã§ãã1970幎代åŸåãã1980幎代åé ã®çŽ æãã³ã¬ã¯ã¿ãŒã®äžçã«å ¥ã£ãŠãããšããã®ãªãªãŒãè²ãé»è²ãè¶è²ã®çç¶ã®çµæ¶ã¯ãåŸã«ã¢ããã³ã®ãã£ãŒã©ãŒã®çãå Žãæ¯é ããèµ€ããããã£ãã€ãã«ã¯èŠããŸããã§ããã圌ãã¯ããã¢ã«ãã¡ã€ãã«åå䌌ãŠããããã«èŠããããããã®ãŸãŸãã売ããããã®ããããŸãããçµæ¶ã¯æ£ããå æ¹æ¶ã®èªä¿¡ãé©åãªå ç¢ãªæ§è³ªããããŠçµéšè±å¯ãªç®ã欺ãã®ã«ååãªè²ç¯å²ãåããŠããŸããã
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å€ãã³ãã©ãå·ã®é±å±±ã³ã¬ã¯ã·ã§ã³ããã®ããåºåã¯ããã®åé¡ãããŸãæããŠããŸããããã¯å€§ããªãã£ããããåãšããŠèª¬æããããµã€ãºã¯ 14.3 x 9.3 x 4.5 cmã硬ãå è§æ±ç¶ã®ããªãºã ãæå€§ 2.2 cmãéã³ãããã³ãºè²ãããã¹ãã«ãªãã¿ãŒã«ãŒã¹ããšã»ããã£ãœãé»è²ãžãšçè²ãããŠããŸããã埮éã®ã¢ããã©ã ç³ãç®ç«ã¡ãŸããã説æã«ã¯ããã®ãã㪠pieces ã¯åœåããã¢ã«ãã¡ã€ãã ãšèããããŠããããåæã®çµæã以åendlichiteãšåŒã°ããŠãããçŽ ãå«ããããã£ãã€ãé åã«åé¡ããããšèšãããŠããŸããããã®æšæ¬ã¯ Dave Bergman ã®èŠªç³ã®äŒæ¥ãæã¡ãã³ãã©ãå·ã¢ã«ãè¿éã® Sweet Home Mine ã§ã®æŽ»åã§é±ç©çã«èšæ¶ãããŠãã人ç©ã®ã³ã¬ã¯ã·ã§ã³ãšããŠç¥ãããŠããŸããããã®æ è·¯ã¯ãã¢ããã³ã®é žåé-äºéé±åºããããã¢ã¡ãªã«ã®é±æ¥çã®äººç©ã®ã³ã¬ã¯ã·ã§ã³ããžããããŠçŸä»£ã®ãªãŒã¯ã·ã§ã³èšé²ãžãšç¶ããŸãã Touissit ã®ãããã£ãã€ããçŸåšã³ã¬ã¯ã¿ãŒã®æã«å±ãã®ã¯ãæ°é®®ãªé±åºã®ãã±ãããã§ã¯ãªããå€ãã³ã¬ã¯ã·ã§ã³ã®äŒèšããã§ããããšã瀺ããŠããŸãã
å¥ã® Touissit ãã£ããããæšæ¬ã¯ããã€ãŠ Jack Halpern ã³ã¬ã¯ã·ã§ã³ã«ãã£ããã®ã§ãç©èªã®å¥ã®åŽé¢ã瀺ããŠããŸãããµã€ãºã¯ 9.8 x 7.7 x 4.3 cmãçŽ 1 cm ãŸã§ã®å æ²¢ããå è§çµæ¶ãè±å¯ã§ãå Žæã«ãã£ãŠã¯æãããªéè²ã®èŠãã被ãã£ãŠããŸãããã®ãªãŒã¯ã·ã§ã³èª¬æã«ã¯åãæ³šæã瀺ãããŸããïŒããã€ãã®åºåã§ã¯ç©è³ªããçŽ ãå«ããendlichiteããšåŒãã§ããŸãããåæ§ã®ç©è³ªã®åæã§ã¯å¿ ãããé¡èãªãçŽ ã瀺ããšã¯éããŸãããçµè«ã¯æå³çã«ä¿å®çã§ãååŠãããå¿ èŠãšããå Žåãé€ããåã«ãããã£ãã€ããšããŠã©ãã«ãä»ããã¹ãã ããšãããã®ã§ãããæ§ã©ãã«ãããã³ãã£ãã¯ã«ãªãåŸãå Žæã«ãããŠããã®æå¶ã¯è¯ãã³ã¬ã¯ã·ã§ã³ã®äžéšã§ãã## é±ç©åŠã¬ã³ãŒããšåºçç©- White, John Sampson (1984), âVanadinite from Touissit, Morocco, and Comments on Endlichite,â The Mineralogical Record, 15(6), 347â350 â Touissitã®ãããžã³ç³ãendlichiteåœååé¡ãšçµã³ã€ãããçŸå°ç¹æã®èšäºã®èŠç¹
Jahn, Steffen, and Bode, Rainer (2013), âThe Touissit-Bou Beker mining district, Morocco,â The Mineralogical Record, 44(6), 595â651 â é žåé±ç©çŸ€ãšæšæ¬ã®éèŠæ§ãç¶²çŸ ãããåéå®¶åãã®äž»èŠãªå°åºè§£èª¬
Claveau, Jacques; Paulhac, Jean; and Pellerin, Jean (1952), âThe lead and zinc deposits of the Bou Beker-Touissit area, eastern French Morocco,â Economic Geology, 47(5), 481â493 â Bou Beker-Touissitå°åã®é-äºéé±åºã«é¢ããåæã®çµæžå°è³ªåŠè«æ
Rajlich, Petr (1983), âGeology of Oued Mekta, a Mississippi Valley-type deposit, Touissit-Bou Beker region, eastern Morocco,â Economic Geology, 78(6), 1239â1254 â å°åºã®äžéšã®è©³çްãªMVTå°è³ª
Dupuy, Jean-Jacques, and Touray, Jean-Claude (1986), âMultistage ore deposition at the Oued Mekta strata-bound lead deposit, Touissit-Bou Beker District, eastern Morocco,â Economic Geology, 81(6), 1558â1561 â å°åºã«ããã倿®µéé±åºæå ã®éèŠè«æ
Makhoukhi, S.; Schmitt, J.M.; Bouabdelli, M.; Bastoul, A.; and Marignac, Ch. (2000), âModelling of an MVT deposit: Touissit-Bou Beker district, eastern Morocco,â Journal of Geochemical Exploration, 69â70, 109â113 â å°åãMVTç³»ãšããŠã®å°çååŠçã»éºäŒçã¢ããªã³ã°
Bouabdellah, M.; Sangster, D.F.; Leach, D.L.; Brown, A.C.; Johnson, C.A.; and Emsbo, P. (2012), âGenesis of the Touissit-Bou Beker Mississippi Valley-Type District (Morocco-Algeria) and Its Relationship to the Africa-Europe Collision,â Economic Geology, 107(1), 117â146 â ã¢ããã³-ã¢ã«ãžã§ãªã¢ã®MVTçå°ã®çŸä»£çéºäŒè«
Bouabdellah, M.; Boukirou, W.; Potra, A.; Melchiorre, E.; Bouzahzah, H.; Yans, J.; Zaid, K.; Idbaroud, M.; Poot, J.; Dekoninck, A.; and Levresse, G. (2021), âOrigin of the Moroccan Touissit-Bou Beker and Jbel Bou Dahar Supergene Non-Sulfide Biomineralization and Its Relevance to Microbiological Activity, Late Miocene Uplift and Climate Changes,â Minerals, 11(4), 401 â å°åºã®è¶ çã®éç¡«åæ§çç©é±ç©åœ¢æã«é¢ããçŸä»£çãªãŒãã³ã¢ã¯ã»ã¹ç ç©¶
Mindat occurrence record: Vanadinite from Touissit, Touissit-Bou Beker mining district â åç §ãšã®ã£ã©ãªãŒã¢ã¯ã»ã¹ãå«ãçŸå°èšé²
Wikimedia Commons: File:Endlichite - Maroc.jpg â é»è²ã® descloizite äžã®ç é žæ§ãããžãã€ãã®åç©é€šé¢šåçãDidier Descouens ã«ããèäœã
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IRB2183 ARSENATIAN VANADINITE, Touissit Morocco â Crystal Classics â Touissitç£ã®ç é žåãŽã¡ããžã³ç³ã®çãæšæ¬åç»ãå æ²¢ãšäžæ¬¡å çµæ¶ã®èŠã ãèŠãã®ã«åœ¹ç«ã¡ãŸãã