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Sample n° 1989
Minerals found in the sample
Mineral | Formula | Category | Subcategory | Importance |
---|---|---|---|---|
BERYL | Be3Al2Si6O18 | cyclosilicates | - | major |
QUARTZ | SiO2 | tektosilicates | - | minor |
TOURMALINE | - | cyclosilicates | tourmaline | minor |
Description
Description:
heterogeneous fragment with green prismatic beryl crystals (var. emerald) and black tourmaline needles
Origin
- Country: Congo (RDC)
- Region: Kivu
- Locality: Kalehe, Numbi, old CNKi mine
Specification
-
Donors: SGR LéopoldvilleDonation year:
-
Sampling year:Registration date:
-
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