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: | Confirmed |
Confirmation Methods: | Visually Identified |
Data |
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Mineral Data: | Click here to view Biotite data |
Locality Data: | Click here to view Nappikallio, Kalvola, Hämeenlinna, Kanta-Häme, Finland |
Data Identifiers |
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Mindat Occurrence Record ID: | 684535 |
Long-form Identifier: | 1:3:684535:3 |
GUID (UUID V4): | fa9c7020-d865-40e0-a03b-e7ca9f79c46c |
Nearest other occurrences of Biotite |
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40.1km (24.9 miles) | ⓘHärksaari Quarry, Tammela, Kanta-Häme, Finland |
47.6km (29.6 miles) | ⓘVatanen, Pirkkala, Pirkanmaa, Finland |
50.5km (31.4 miles) | ⓘTupala deposit, Somero, Southwest Finland, Finland |
62.3km (38.7 miles) | ⓘPalmottu U deposit, Palmottu Lake, Lohja, Uusimaa, Finland |
66.9km (41.6 miles) | ⓘEräpyhä pegmatite, Eräjärvi area, Orivesi, Pirkanmaa, Finland |
67.1km (41.7 miles) | ⓘKatila, Eräjärvi area, Orivesi, Pirkanmaa, Finland |
71.3km (44.3 miles) | ⓘKovela, Lohja, Uusimaa, Finland |
74.0km (46.0 miles) | ⓘViitaniemi pegmatite, Eräjärvi area, Orivesi, Pirkanmaa, Finland |
82.4km (51.2 miles) | ⓘSalittu, Suomusjärvi, Salo, Southwest Finland, Finland |
82.8km (51.5 miles) | ⓘHaveri mine, Viljakkala, Ylöjärvi, Pirkanmaa, Finland |
References |
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Reference Search (possible matching items) |
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| | Journal (article/letter/editorial) | andalusite, sillimanite, chlorite, muscovite, biotite, and the plagioclase, amphibole, and pyroxene families...Associated minerals are gedrite, hypersthene, and biotite. Fragments of gem rhodolite were once mined with...cm, some of which have yielded small gems, in biotite schist exposed along Grape Creek near Cañon City...abrasives mine at Nappikallio, Kalvola, and a quarry and railway tunnel at Vantaa, Finland, have also produced...1998. Connoisseur’s choice: Uvarovite, Outokumpu, Finland. Rocks & Minerals 68 (3): 176–78. Dietrich, R. |
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