Locality type: | Mine |
Classification |
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Species: | 'Biotite' (not an IMA approved species) |
Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Confirmation |
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Validity: | Believed Valid |
Associated Minerals Based on Photo Data: |
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Emerald | ⓘ2 photos of Biotite associated with Emerald at this locality. |
Data |
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Mineral Data: | Click here to view Biotite data |
Locality Data: | Click here to view Morafeno emerald mine, Andonabe, Mananjary District, Vatovavy Fitovinany, Madagascar |
Data Identifiers |
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Mindat Occurrence Record ID: | 818915 |
Long-form Identifier: | 1:3:818915:8 |
GUID (UUID V4): | 6c9724b0-3499-4e94-b782-59b7c78879a7 |
Nearest other occurrences of Biotite |
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13.3km (8.3 miles) | ⓘAnkadilalana emerald mine, Ambalahosy Nord, Mananjary District, Vatovavy Fitovinany, Madagascar |
References |
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Cheilletz, A., Sabot, B., Marchand, P., De Donato, P., Taylor, B., Archibald, D., Barres, O. , Andrianjaffy, J (2001) Emerald deposits in Madagascar: Two different types for one mineralizing event. European Union of Geosciences XI General Assembly, EUG XI. Symposium OS06 Mineralogy, Ore Geology and Mineral Resources. 547 |
Reference Search (possible matching items) |
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| | Journal (issue) | ] 140 J. Gemm., 1992, 23, 3 Emeralds from Madagascar Dietmar Schwarz 1 and Ulrich Henri 2 1 Research...Idar-Oberstein, FRG Introduction The island of Madagascar is known for its wealth of precious stones. In...survey on the occurrences of precious stones in Madagascar, Chikayama (1989) has mentioned 50 different...'Mineralogie de Madagascar', Lacroix (1922) gave a detailed survey on the Madagascar occurrences of beryls...bluish-green. Until that time, emerald occurrences had not been known in Madagascar. Although Levât (1912) had | | | Journal (issue) | ] 140 J. Gemm., 1992, 23, 3 Emeralds from Madagascar Dietmar Schwarz 1 and Ulrich Henri 2 1 Research...Idar-Oberstein, FRG Introduction The island of Madagascar is known for its wealth of precious stones. In...survey on the occurrences of precious stones in Madagascar, Chikayama (1989) has mentioned 50 different...'Mineralogie de Madagascar', Lacroix (1922) gave a detailed survey on the Madagascar occurrences of beryls...bluish-green. Until that time, emerald occurrences had not been known in Madagascar. Although Levât (1912) had | | | Report (issue) | our way through the compet itive minefield of emerald science, much of John's contribu tion to this...any other opinion. extraLapis English No. 2: Emerald The Most Valuable Beryl The Most Precious Gemstone...we • pay tribute to John Sinkankas to whom this emerald issue is dedicated. John Sinkankas wrote more...than 15 books including his 1981 definitive work Emerald and Other Beryls. He set standards for authors...Gloria & Gunther A 2001 Find of top-quality emerald crystals from La Pita at Maripi, Boyac |
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