Mineralogy Database

Search |  About the mineralogy database |  Contact

Sample n° 6629

Minerals found in the sample
Mineral Formula Category Subcategory Importance
GAHNITE ZnAl2O4 oxides and hydroxides spinel major
IXIOLITE (Ta,Mn,Nb)O2 oxides and hydroxides - major
URANINITE UO2 oxides and hydroxides - major
COLUMBITE (Fe,Mg,Mn)Nb2O6 oxides and hydroxides - minor
TANTALITE (Fe2+,Mn2+)Ta2O6 oxides and hydroxides - minor
Description
Description: sample with uraninite (partly yellow), bottle-green gahnite, black ixiolite plates, fragmented columbo-tantalite crystals
Origin
  • Country: Brazil
  • Region: Rio Grande do Norte
  • Locality: Parelhas, Alto do Trigueiro Mine
Specification
  • Donors: de Almeida
    Donation year: 1955
  • Sampling year:
    Registration date:
  • Quantity: X
    Size: concentrate
  • Dimension code 1>2>3: 3
    Quality code 1>2>3: 1
  • Holotype: no
    Paratype: no
    Radioactive: yes
  • Thin section: no
    Chemical analysis: no
    X-Ray spectra: yes
Previous page