| Locality type: | Mine |
| Classification |
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| Species: | Montmorillonite |
| Formula: | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Comments: | Maybe a pseudomorph ? after another mineral. |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Londonite-Rhodizite Series | ⓘ1 photo of Montmorillonite associated with Londonite-Rhodizite Series at this locality. |
| Tourmaline | ⓘ1 photo of Montmorillonite associated with Tourmaline at this locality. |
| Quartz | ⓘ1 photo of Montmorillonite associated with Quartz at this locality. |
| Data |
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| Mineral Data: | Click here to view Montmorillonite data |
| Locality Data: | Click here to view Antsongombato gem mine, Antsentsindrano, Anosiarivo Manapa, Betafo District, Vakinankaratra, Madagascar |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 835932 |
| Long-form Identifier: | 1:3:835932:2 |
| GUID (UUID V4): | 2314d19f-cb64-4aa8-a903-e03ba05de808 |
| References |
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| Reference Search (possible matching items) |
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 | | Report (issue) | | The Natural History Museum of Milan and its Madagascar Collection The Museo Civico di Storia Naturale... the museum began paleontologic fieldwork in Madagascar (upper Permian fauna and Jurassic and Cretaceous...fieldwork in Madagascar in 1996 in collaboration with other institu tions in Madagascar, Italy, and the...Pezzotta has spent a total of twenty nine months in Madagascar making geological-mineralogical surveys. In collaboration...both classic and new minerals and gemstones from Madagascar opened at the Natural History Museum in Milan |  | | Journal (issue) | | _____________ 294 Chart of Commercially Available Gem Treatments Christopher P. Smith and Shane F. McClure...comprehensive, easy-to-use reference to the most common gem enhancements on the market today and their detectability...Rhodizite-Londonite from the Antsongombato Pegmatite, Central Madagascar Brendan M. Laurs, Federico Pezzotta...geology, mining, and gemological characteristics of gem-quality rhodizite-londonite from its only known source...REGULAR FEATURES _______________________________ 340 Gem Trade Lab Notes • “Piranha” agate • Surface-treated |  | | Book | | Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals in the...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous |
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