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åç: Rob Lavinsky / iRocks.com çµç± Wikimedia Commons
ãããã®æšæ¬ããã®ãããªæš©åšãæã€çç±ã¯ã aesthetics ã ãã§ãªãå°è³ªçã«ãéèŠã ããã§ãããTouissit ã¯ã¢ããã³æ±éšã® Touissit-Bou Beker 諞å°åºã«ãããç³ç°å²©ãä»åšãã Mississippi Valley åã®é-äºé垯ã§ãã¬ã¬ããšéé«éé±ãè€éã«å«ãŸãããåŸã®é žåäœçšã«ããåæç¡«åé±ã®äžéšãäºæ¬¡éã»äºéã»é é±ç©ã®èŠäºãªçŸ€ã圢æãããanglesite ã«ãšã£ãŠéèŠãªåå¿ã¯ãçé žå¡©ãä¹ããããŸãã¯ç¡«é žå¡©ãè±å¯ãªåŸ®ç°å¢ã§ãã¬ã¬ã PbS ãéç¡«é žå¡© PbSO4 ã«é žåããããšã§ãã£ããçé žå¡©ã奜ãååŠæ¡ä»¶ã§ã¯æ¹è§£ç³ã圢æãããé žåç³»ã«é ãå ¥ã蟌ããšåéç³ãšç·ç°Ÿç³ãå ±çããã
ã³ã¬ã¯ã¿ãŒã Touissit ã® anglesite ãè©äŸ¡ããã®ã¯ãçš®ãšããŠçšå°ãªçµã¿åããâ倩ç¶ã®é£œåããé»è²ãã¬ã©ã¹å æ²¢ãéæåºŠããããŠçµæ¶ã®åœ¢ç¶ãéãããããã¥ã¢ããã£ããããæšæ¬ãšããŠååãªå€§ãããæã€ããšããç¹ã§ãããå€ãã®å€å žäŸã¯åç¬ã®çµæ¶ã ãã§ãªããå®å šãªçµæãæããŠããããšãå€ãâéå±ç°è²ã®ã¬ã¬ããã anglesite ãç«ã¡äžãããæ·¡ãäºæ¬¡é±ç©ãåãå·»ããæ¯å²©ãç©èªãäŒããã ãã®ãããªã¯ã¹ãåããŠããã

åç: Didier Descouens çµç± Wikimedia Commons
æŽå²çã«ã¯ãTouissit ã¯1970幎代åŸåãã1980幎代ååã«ãããŠå€§èŠæš¡ãªæšæ¬çç£ãè¡ããé±ç©åéå®¶ã®éã§æåã«ãªã£ããå°åºã¯ãã以åããæ¡æãããŠãããããTouissit anglesiteããšããã³ã¬ã¯ã¿ãŒåžå Žã®ã¢ã€ãã³ãã£ãã£ã¯ããããã®å€å žçãªé»è²ãçµæ¶ã«ãã£ãŠåœ¢äœãããå€ããé«åºŠãªç§çã³ã¬ã¯ã·ã§ã³ãåç©é€šå±ç€ºãžãšåãç¶ãããŠãã£ããçŸåšã§ã¯æé«ã®åã¯ãæ¡æçŽåŸã®æ°è£œåããããå€ãã³ã¬ã¯ã·ã§ã³ã®ç³»èãæã€æ§åšåº«æšæ¬ã§ããããšãå€ãã## Featured Specimens
Search for specimens: View all anglesite specimens from Touissit, Morocco
Touissit is one of the main deposits of the Touissit-Bou Beker mining district in Jerada Province, Oriental Region, eastern Morocco. The district trends ENE-WSW for roughly 16 km, with a variable width of about 100 to 1,200 m, and lies near the Algerian border, south of Oujda. In specimen labels, âTouissitâ is often used broadly, and older labels may not distinguish cleanly between the Touissit deposit proper, Shaft IX, Shaft XI, Beddiane, Bou Beker, Zellidja, or other workings in the wider Touissit-Bou Beker system.
Geologically the deposit is a carbonate-hosted MVT lead-zinc system. The primary ore is chiefly galena and sphalerite, with pyrite or marcasite and lesser chalcopyrite, bornite, tetrahedrite, Pb-Sb sulfosalts, and silver-bearing species. The ore occurs in dolostone as replacement bodies and open-space fillings, with breccia textures playing a major role. Crackle, mosaic, rubble, and rock-matrix breccias provided the porosity and pathways that later allowed oxidizing meteoric water to move through the ore.
The secondary mineralogy that made Touissit famous developed after oxidation of those primary sulfides. Galena provided the lead for anglesite and cerussite; sphalerite fed zinc minerals such as smithsonite and hemimorphite; chalcopyrite contributed to copper carbonates such as azurite and malachite. The carbonate host rocks buffered acidic fluids and controlled whether lead was fixed as sulfate or carbonate. Anglesite is especially tied to oxidation conditions in which sulfate remained important and carbonate activity was not high enough to convert all lead into cerussite.
Mining history and specimen history are not identical. French mining followed World War I and continued for decades, but the collector fame of Touissit accelerated much later, when the district began producing world-class secondary minerals in the late 1970s. Yellow anglesite, azurite, cerussite, vanadinite, and wulfenite put the locality into major collections. Pit and shaft labels are especially valuable where preserved; documented specimen labels include Shaft IX and Shaft XI material, and one well-described Shaft IX specimen was mined in 1997 with lemon-yellow anglesite crystals to 3 cm on massive galena.
This is not a casual collecting locality. The Touissit-Bou Beker workings are mining ground, not an open public rockhounding site. Serious collectors normally encounter Touissit anglesite through established dealers, older collections, museum deaccessions, and old stock from European and Moroccan mineral channels. Because the locality name has long been used broadly, good provenance notesâmine, shaft, date, previous owner, dealer, and whether the specimen was analyzed or visually vettedâare important parts of the specimenâs value.## Touissit, Moroccoç£ã®æªç³è±é±ã®ç¹åŸŽ
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çŸä»£ã®ãªã¹ãã«ã¯ãæè²ããããTouissitææã«å¯ŸããèŠåãææèŠãããŸãã販売è ããdyedïŒæè²ïŒãbleachedïŒæŒçœïŒãtreatedïŒåŠçæžã¿ïŒãenhancedïŒåŒ·åïŒããªã©ã®èªã䜿çšãããã©ããã«é¢ããããåéäžã®åé¡ã¯åãã§ããæã䟡å€ã®ããè²ã¯èªç¶ãªå éšã®é»ã§ããã人工çãªè¡šé¢å¹æã§ã¯ãããŸãããé«å質ã®äœåã«ã€ããŠã¯ãåºèªãšé©åã§ããã°ç¬ç«ããæ€æ»ãæ±ããŠãã ããã
ã³ã³ãã£ã·ã§ã³ãããäžã€ã®é倧ãªèŠå ã§ããAnglesiteã¯éç¡«é žå¡©ã§å¯åºŠãé«ããç¡¬åºŠã¯æ¯èŒçäœããããé²åºãšããžã®æ¬ ããå·ã€ããçµç«¯ãæ¥è§Šãã¡ãŒãžãäžè¬çã§ããæã galena åºè³ªã¯æ§ä¿®çãããªãã³ã°ã®çè·¡ãé ãããšããããŸããæ¥åéšãåºè³ªã®äºè£ãæ¥çå€ã®èå ãå æ²¢ã®äžäžèŽãæ¡å€§é¡ã§ç¹æ€ããŠãã ãããçš®ã¯éãå«ããããæšæ¬ãæ±ãéã¯æ éã«ãæ¥è§ŠåŸã¯æãæŽããç Žçãç²ãããåäŸãé£åã®ããå Žæããé ãããŠãã ããã
åžå Žã®å ¥ææ§ã¯äžåäžã§ããæ®éã®å°ããªçµæ¶ãæ§ãããªåºè³ªã®äŸã¯ææçŸããŸãããæé«å質ã®Touissit anglesiteã¯æ§ stock ã® classics ã§ãããé »ç¹ã«ã¯æµéããŸããã2026幎5æã®åžå Žã¹ãããã·ã§ããã§ã¯ãTouissit anglesiteã¯æ°çŸãã«ããåãã«å°ååŸã§ãªã¹ããããå°ãäžãµã€ãºã®ãã®ã¯çŽ360ã1,970ãã«ãé±ç©ãã£ãŒã©ãŒã®éåãµã€ãäžã§ããšãªãŒãã®å±ç€º-gradeã®äŸã¯ãã§ã«å£²åŽæžã¿ã§ãäž»èŠã³ã¬ã¯ã·ã§ã³ã®ç³»èãæãããŠããŸãããæé«ã®ããŒã¹ã¯åãªããã¢ããã³ç£ anglesiteãã§ã¯ãªããã«ã©ãŒãã¯ãªã¢ãªãã£ã圢ãåºèªã®ãã¹ãŠãæŽã£ã classic Touissit yellow anglesiteã§ãã## Stories & Field Notes
Touissit anglesite collectors ãç¥ã£ãŠããã¹ãèŠåçãªè©±ã¯ãã°ã¬ãŒãã»ã€ãšããŒã»ã¢ã³ã°ã»ãµã€ãã®çºèŠãæšæ¬ååŒã«å°éãã1980幎代åé ã«å§ãŸã£ãã Touissitç£ã®æ·¡é»è²ã§ã»ãŒç¡è²ã«è¿ãçµæ¶ããåŒ·ãæŒçœå€ã«æµžãããšã§ç¥çè²ã®èµ€ã«å€åããŠãããåå¿ã¯éããæ°ç§ããããããªããšå ±åãããå æ²¢ãä¿ã€ãããè©æ¬ºã¯ç¹ã«å±éºã ã£ããè²ã¯çµæ¶ã®é¢ã«ç®èç¶ã«ãç Žæéšã«ãæ®ããæŽãæµãããªãã£ããã¢ããã³ã®ãã£ãŒã©ãŒãå¶ç¶ãã®åå¿ãçºèŠãããšãããä»ã®ãã£ãŒã©ãŒã¯é瀺ãªãã«åŠçæã販売ãããã«ã«ããã¯ã®ãžã§ãŒãžã»ãã¹ãã³ã¯ã飜åãããã³æ°Žãåå¿ãå ã«æ»ããŠå æ²¢ãæãªããªãããšãçªãæ¢ããããåå ±åã¯ãããã³ã®å±éºæ§ã匷調ããŠãããåéè ã«ãšã£ãŠã®æèšã¯ãååŠçãšããããå®çšçã§ãããè¯ãéããŠçŽç²ãªé»è²ãæãŸããäžæ¹ã§ã衚é¢ããªã¬ã³ãžè²ã«èŠããå Žåã¯çãã¹ãããšããç¹ã§ããã
æãææ ãåèµ·ãã Touissit anglesite ã®è©±ã®äžã€ã¯ãJoe Budd ãæ®åœ±ã Rob Lavinsky / iRocks ã¢ãŒã«ã€ãããå ¬éãããã4.5 à 4.2 à 2.6 cm ã®ãããã¥ã¢äžã€ã«é¢ãããã®ã§ããããã®æšæ¬ã¯ãé¡ã®ãããªãå æ²¢ãšåè¶ããéæåºŠãæã€å®ç³æ¶ãšããŠãå ãžã§ã³ã»ããŒãããŠã 2544å·ãšèª¬æãããThe John Barlow Collection ã«æ²èŒãããŠããã Lavinsky ã¯ãJohn Barlow ã³ã¬ã¯ã·ã§ã³ã1998幎ã«å£²åŽãããåŸãåäžå¹Žéã§äžåºŠãã® piece ãææãããšæžããŠããããã®åŸããã®ããŒã¹ã¯ Tom Hall ã³ã¬ã¯ã·ã§ã³ããæ¥ãã Hall ã¯é·å¹Žã®ã³ã¬ã¯ã¿ãŒã§ãã·ã«ãŽäº€é¿æ¥œå£ã®ç¬¬äžåžãŽã¡ã€ãªãªã³å¥è ãéä»»ããŠä»¥éã1960幎代以éã¯è²é®®ãããªé«å質ã®ãããã¥ã¢ãšå°ããªãã£ããããæšæ¬ãå°éãšããŠããã説æã¯æšæ¬ãšã³ããªãšããŠã¯ unusually personal ã§ããããã®ããŒã¹ã¯ã㌠ããŠã®æ¬ããæãåºãããå°å·ç©ã§ã¯ãè¯ããããããã«æåã¯çãããæã«åã£ãŠã¿ããšåçãããããã«è¯ããã®ã ã£ãã
ããæ§ããã ãåæ§ã«åéè 颚ã®ãšããœãŒãã¯ãèå é±ç©ã®ã³ãã¥ããã£ããæ¥ãŠããã2018幎ãTouissit anglesite ã®æšæ¬ãå°å ã®ããã¯ã·ã§ãŒã®å€ãæšæ¬ã®äžç³åã®äžã«åãããŠããã®ãèŠã€ãããããšããããåéè ã¯ãããäºæ¥éãã®ãŸãŸæŸçœ®ããæ»ã£ãŠããŠè³Œå ¥ããããã®ããŒã¹ã¯ 2.5 à 2 à 4 ã€ã³ããéã㯠635 g ã§ãäžéšãšäžéšã«ã»ãšãã©æ¹éãèŠããããæ¬æã¯ãã»ãŒãã¹ãŠçµæ¶ã§ã§ããŠããããšèšãããã2026幎ã«ã¯èå é±ç©åŠäŒã®ããŒã¿ããŒã¹ã«ç»é²ãããé·æ³¢é·çŽ«å€ç·ã®äžã§é»è²ã«èå ããããšãèšé²ããããæãçŸãã Touissit anglesite ãæåãªå€ã Trophy ã§ããåžå Žã«ãããŠããå€ãå¹³æ¿ãèŠéããããã©ãã«ãä»ã®äººãæ©ã¿å»ãã®ãåŸ ã£ãŠããæšæ¬ãªã©ãå Žæ«ã®å°ã§ãçãã䟡å€ã®ããäžåãçŸããããšãæãåºãããã## é±ç©åŠçèšé²ãšåºçç©- Rainer Bode and Steffen Jahn, âThe Touissit-Bou Beker mining district, Morocco,â The Mineralogical Record, 44(6), 595â651, 2013 â äžçã¯ã©ã¹ã® Touissit æ æ¬ã1970幎代åŸå以éã«åéãžãšå ¥ã£ãããšãèŠçŽãããäž»èŠãªã³ã¬ã¯ã¿ãŒå¿åã®å°åºè§£èª¬ãè§éç³ãèé é±ãæ¹è§£ç³ããããžã³ç³ããŠã«ãã§ã³ç³ããã¹ã²ã³ç³ããã©ã©ãŠãªãªãã€ããããã©ã€ããleadhillite ãªã©ã
S. Makhoukhi, J. M. Schmitt, M. Bouabdelli, A. Bastoul, and Ch. Marignac, âModelling of an MVT deposit: Touissit-Bou Beker district (eastern Morocco),â Journal of Geochemical Exploration, 69â70, 109â113, 2000 â Touissit-Bou Beker å°åºãåã¢ããªã«ã§æãéèŠãª MVT å°åºãšããŠç¢ºç«ããç±æ°Žæµäœã¢ãã«ãèŠçŽã
Mohammed Bouabdellah, Donald F. Sangster, David L. Leach, Alex C. Brown, Craig A. Johnson, and Poul Emsbo, 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, 2012 â MVT ã®çºçæ©æ§ãããã¢ãªã¿ã€ãºã Jurassic é¡å²©ãç¡«åé±åãé±ç³å¶åŸ¡ãæµäœå èµæš¡åã«é¢ããéèŠãªç§åŠè«æã
Mohammed Bouabdellah et al., 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, 2021 â é žåæ®µéã説æããè¶ é·ã®éç¡«åæ§çç©é±ç©åã®çŸä»£ç詳现ç ç©¶ãè§éç³ãæ¹è§£ç³ãè±äºéé±ãåéç³ãèé é±ã®çæã«é¢äžã
John Sampson White, âVanadinite from Touissit, Morocco, and Comments on Endlichite,â The Mineralogical Record, 15(6), 347â350, 1984 â Mindat ã®é±ç©ãªã¹ãã§åŒçšããã Touissit é¢é£ã®éèŠãªã³ã¬ã¯ã¿ãŒæç®ãå°åºã®ãããžã³ç³ããã³ç çŽ å«æãããžã³ç³ã®æŽå²ã«ç¹ã«é¢é£ã
âTreated Moroccan anglesites,â Gems & Gemology, Winter 1984, Gem News section â Touissit ã®è§éç³ã®æŒçœåŠçãšäººå·¥çãªç¥ç-èµ€è²ãžã®å€è²ãããã³ã³ã¬ã¯ã¿ãŒåžå Žã«ãããåé¡ãèšé²ããå€å žçãªçå ±ã
Australian Museum, Anglesite specimen D.50456, Albert Chapman Collection â Touissit é±å±±ãGebel Mahserããªãžã£ãè¿éã®è§éç³æšæ¬ã®çŸè¡é€šèšé²ããµã€ãº 5.5 à 3.5 à 0.23 cmã1984 幎㫠Horst Burkard ãã Albert Chapman ãè³Œå ¥ã1996 幎ã«ç»é²ã
Fluorescent Mineral Society Database, âAnglesite - Touissit Mine, Oujda, Morocco,â specimen entry, May 8, 2026 â 倧ããªTouissit ã®æšæ¬ãææžåãuissit anglesite specimen with galena and yellow longwave fluorescence.## ãããªãèªã¿ç©ãšå€éšãªã³ã¯
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Wikimedia Commons: Anglésite-anglesite touissit minemorocco.jpg â ex-John Barlowãex-Tom Hall Touissitæ¹è§£ç³ããatureã®é«å質ç»åãšæšæ¬å±¥æŽã
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