Mineralogy Database

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Sample n° 13207

Minerals found in the sample
Mineral Formula Category Subcategory Importance
HORNBLENDE [ ]Ca2((Fe2+,Mg)4Al)(Si7Al)O22(OH)2 inosilicates amphiboles major
TITANITE CaTiSiO5 nesosilicates - minor
Description
Description: oriented black prismatic crystals (2 cm) in beige microgranular rock
Origin
  • Country: Congo (RDC)
  • Region: Bas-Congo
  • Locality: Boma, Carrière des Voies Navigables
Specification
  • Donors: Tack
    Donation year: 1974
  • 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: yes
    Chemical analysis: no
    X-Ray spectra: no
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