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Sample n° 3660

Minerals found in the sample
Mineral Formula Category Subcategory Importance
SIDEROPHYLLITE KFe2+2Al(Si2Al2)O10(OH)2 phyllosilicates mica major
MUSCOVITE KAl2(Si3Al)O10(OH)2 phyllosilicates mica minor
Description
Description: altered black and pale green plate-shaped crystals
Information: geochronology - Monteyne-Poulaert, G., Delwiche, R., Safiannikoff, A. & Cahen, L., 1962. Ages des minéralisations pegmatitiques et filoniennes du Kivu méridional (Congo oriental). Indications préliminaires sur les âges de phases pegmatitiques successives. Bulletin de la Société Belge de Géologie 71, 272-295.
Origin
  • Country: Congo (RDC)
  • Region: Kivu
  • Locality: Mwenga, Lugusha river, Elila tributary
Specification
  • Donors: Lhoest
    Donation year:
  • Sampling year:
    Registration date:
  • Quantity: X
    Size: 2
  • Dimension code 1>2>3: 3
    Quality code 1>2>3: 1
  • Holotype: no
    Paratype: no
    Radioactive: no
  • Thin section: no
    Chemical analysis: no
    X-Ray spectra: no
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