Mineralogy Database

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Sample n° 4742

Minerals found in the sample
Mineral Formula Category Subcategory Importance
CASSITERITE SnO2 oxides and hydroxides - major
ARSENOPYRITE FeAsS sulfides and sulfosalts - minor
TOPAZ Al2SiO4F2 nesosilicates - minor
Description
Description: crust of bright black crystals (1 cm) on rock substrate
Origin
  • Country: United Kingdom
  • Region: Cornwall
  • Locality:
Specification
  • Donors: Polinard
    Donation year: 1954
  • Sampling year:
    Registration date:
  • Quantity: 2
    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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