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Sample n° 11170
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
HORNBLENDE | [ ]Ca2((Fe2+,Mg)4Al)(Si7Al)O22(OH)2 | inosilicates | amphiboles | major |
BIOTITE | K(Fe2+,Mg)3(AlSi3O10)(OH)2 | phyllosilicates | mica | minor |
Description
Description:
black crystalline volcanic bomb (6 cm)
Origin
- Country: Germany
- Region: Eifel
- Locality: Weinfelder Maar NW, near Daun
Specification
-
Donors: ComblainDonation year: 1966
-
Sampling year:Registration date:
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Quantity: 1Size: 2
-
Dimension code 1>2>3: 3Quality code 1>2>3: 1
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Holotype: noParatype: noRadioactive: no
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Thin section: noChemical analysis: noX-Ray spectra: no