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Search for specimens: View all analcime specimens from Mont Saint-Hilaire, Canada
Mont Saint-Hilaire lies about 40 kilometers east of Montréal, near the Richelieu River, and the mineral locality of collector fame is the quarry on the northeast side of the mountain. Older labels may read Poudrette quarry, Demix quarry, De-Mix quarry, Uni-Mix quarry, Desourdy quarry, CarriÚre de Poudrette, or simply Mont Saint-Hilaire. In the collector and mineralogical literature, âPoudrette quarryâ remains the most familiar name, even though the present quarry name is CarriÚre Mont Saint-Hilaire.
The quarry is an active aggregate operation, not a recreational public collecting site. The deposit is an alkaline igneous complex, and the relevant collecting environments include peralkaline syenites, pegmatites, altered pegmatites, igneous breccias, hornfels and marble xenoliths, sodalite-rich rocks, and miarolitic cavities. Analcime is widespread across several of these environments, which explains why it appears both as a principal display mineral and as an associated species on many more complex Mont Saint-Hilaire specimens.
Quarrying exposed the mineralized East Hill Suite and turned Mont Saint-Hilaire from a geologically interesting hill into a mineralogical landmark. Minor scientific notice of the mountain goes back to the nineteenth century, but the localityâs modern importance began after quarrying exposed fresh rock in the early 1960s. Since then, Mont Saint-Hilaire has become one of the richest known single mineral localities, with hundreds of recorded species and dozens of type-locality minerals. Museum collections in Montréal and Ottawa preserve many of the finest examples, and the Canadian Museum of Natureâs Haineault Mont Saint-Hilaire Collection is especially important for documenting the locality at its best.
The quarry history matters to labels. The Demix workings became part of the Poudrette quarry after the Demix quarry ceased operations and was sold to the Poudrette family in 1994. In late 2007 the Poudrette quarry changed ownership; the Poudrette family was no longer involved, and access changed dramatically. Modern collecting is highly restricted, with limited organized field trips for small groups rather than the broader access collectors remember from the quarryâs great producing years.
Analcime-bearing pockets range from small vugs to large zoned cavities. The most important specimens came from open pockets in the syenitic and pegmatitic environments where analcime could grow as free crystals with late-stage companions. The best older pieces often show careful trimming and extraction from pocket material rather than random quarry rubble; many are cabinet specimens from finds made when experienced local collectors had repeated access to fresh exposures.## Mont Saint-Hilaire, Canada ç£ã®ã¢ããç³ã®ç¹åŸŽ
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ã¢ãã«ã«ç³åéè ã«ãšã£ãŠã®æèšã¯ããã¹ãŠã®å£ãèšé²ãé ããŠããããã§ã¯ãªããšããããšã§ã¯ãªããã¢ã³ã»ãµã³ïŒã€ã©ã€ãŒã«ã®ãã±ãããæ¥µåºŠã«å±åšããŠãããšããããšã§ãããæ°ã»ã³ãã¡ãŒãã«ã®æ¹å€ãåããç麻岩ãäžæ¯ã§ããããšãããåŸããããå°ãæ·±ãæãã°ãæ¡æå Žããæ¥ããšäºæ³ããããã®ãèŠãçµæ¶ãåãã空æŽãèŠã€ããããšãããã## é±ç©åŠçèšé²ãšåºçç©- Mindat ã®åºçŸèšé²: Analcime from Poudrette quarry, Mont Saint-Hilaire â Mont Saint-Hilaire ã® analcime ã«é¢ãããªã³ã©ã€ã³åºçŸèšé²ã®èŠç¹ãåŒãçµæ¶åœ¢ãè²ãå ±åé±ç©ããµã€ãºããŒããåèæç®ãå«ãã
Mindat ã®ããŒã«ãªãã£èšé²: Poudrette quarry / CarriÚre Mont Saint-Hilaire â 座æšãæ¡æå Žåã®å±¥æŽãæ¡é-accessããŒããçš®ãªã¹ããå°è³ªæŠèŠãåããã³ã¢ããŒã«ãªãã£ããŒãžã
G. S. Wells, 1975. Studies of the mineral analcime from Mount St.-Hilaire, Quebec. M.Sc. thesis, Carleton University, Ottawa, Canada. Mindat åç §èšé² â 該åœå°ã® analcime ã«é¢ããå°çšç ç©¶è«æã
Joel Grice, 1989. âMont Saint-Hilaire, Quebec: Canadaâs Most Diverse Mineral Locality.â in Famous Mineral Localities of Canada, Fitzhenry & Whiteside and the National Museum of Natural Sciences, pp. 100â108. Mindatã§åç § â å€å žçãªããŒã«ãªãã£è§£èª¬ã
László Horváth and Robert A. Gault, 1990. âThe Mineralogy of Mont Saint-Hilaire, Quebec.â The Mineralogical Record, 21(4), 281â359. Mindatã§åç § â ããŒã«ãªãã£ã®ã¢ãã°ã©ãçç»æç解説ã
László Horváth, Robert A. Gault, Elsa Pfenninger-Horváth and Glenn Poirier, 2019. Mont Saint-Hilaire: History, Geology, Mineralogy. The Canadian Mineralogist, Special Publication 14. Mineralogical Association of Canada. åºç瀟ããŒãž â ããŒã«ãªãã£ã«é¢ããçŸä»£ã®äž»èŠã¢ãã°ã©ãã
Jeffrey de Fourestier, 2020. Review of Mont Saint-Hilaire: History, Geology, Mineralogy. Mineralogical Magazine, 84(3), 493â494. Cambridge Core â 2019幎ç¹å¥åè¡ã®åè¡ç©ã¬ãã¥ãŒãšæç®ç¢ºèªã
K. L. Currie, G. N. Eby and J. Gittins, 1986. âThe petrology of the Mont Saint-Hilaire complex, southern Quebec: An alkaline gabbro-peralkaline syenite association.â Lithos, 19(1), 65â81. DOI â ã¢ã«ã«ãªæ§è€åäœãçè§£ããããã®åºç€çãªå²©ç³åŠè«æã
IUGS Geological Heritage Site: Mineral site of Mont Saint-Hilaire â åœéå°è³ªéºç£ãããã¡ã€ã«ãçš®æ°ã«ãŠã³ããèšå®ãæ¡æå±¥æŽãã«ããèªç¶å²åç©é€šã®ã»ã©ã³ãã€ããšåæéé¡ã®æšæ¬ãå«ãã
Canadian Museum of Nature: Mont Saint-Hilaire at CMN â Haineault Mont Saint-Hilaire ã³ã¬ã¯ã·ã§ã³ã®åç©é€šã¢ã«ãŠã³ããåæç ç³äžã®ã»ã©ã³ãç³ãšã¢ã³ã¢ã«ãµã€ããå«ããã³ã¬ã¯ã·ã§ã³ã®æçŸ©ãèšé²ããæšæ¬ã
Canadian Museum of Nature: The Haineault Mont Saint-Hilaire Collection â äž»èŠãªåç©é€šã®ååŸãšããã®ç ç©¶ã»å±ç€ºäŸ¡å€ã®æŠèŠã## Videos & Media
âMont Saint-HilaireâA Canadian Mineral Hotspotâ â Canadian Museum of Nature â Museum video introducing why Mont Saint-Hilaire is mineralogically exceptional and showing notable specimens from the site. URL: https://www.youtube.com/watch?v=Ar4pK9nZpso
âEarth Galleryâ â Canadian Museum of Nature â Exhibition page noting the Mont Saint-Hilaire display in the museumâs Earth Gallery, with more than 50 specimens from the locality. URL: https://nature.ca/en/visit-us/whats-on/listing/earth-gallery/
âAnalcime-192030â â Wikimedia Commons / Modris Baum â Public-domain photograph of analcime on microcline from the Poudrette quarry, with detailed find notes from the October 1996 pocket. URL: https://commons.wikimedia.org/wiki/File:Analcime-192030.jpg