Locality type: | Quarry |
Classification |
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Species: | Magnesio-hornblende |
Formula: | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 |
Confirmation |
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Validity: | Believed Valid |
Data |
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Mineral Data: | Click here to view Magnesio-hornblende data |
Locality Data: | Click here to view Borek quarry, Borek, Havlíčkův Brod District, Vysočina Region, Czech Republic |
Data Identifiers |
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Mindat Occurrence Record ID: | 300612 |
Long-form Identifier: | 1:3:300612:2 |
GUID (UUID V4): | 7c3092a2-ff20-4ee3-803e-060cb0c95aed |
Nearest other occurrences of Magnesio-hornblende |
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25.8km (16.0 miles) | ⓘNové Dvory eclogite outcrop, Nové Dvory, Kutná Hora District, Central Bohemian Region, Czech Republic |
References |
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Reference Search (possible matching items) |
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| | Journal (article/letter/editorial) | kyanite-free varieties; primary phengite, zoisite and hornblende are sometimes noted (Jelinek et al., 1989; O'Brien...south-east. The crystalline rocks of the massifs (hornblende schists, mica schists, augen gneiss and rare...subalkaline tholeiitic affinity, yielding K/Ar hornblende ages between 370 and 400 Ma, contains minor calcsilicate...statified sequence of banded amphibolites and hornblende gneisses, acid gneisses and some carbonates with...contain accessory phengite, kyanite, zoisite or hornblende and so are comparable with the MM rather than |
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