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Sample n° 6841

Minerals found in the sample
Mineral Formula Category Subcategory Importance
ALLOPHANE Al2O3(SiO2)1,3-2,0•2,5-3,0H2O phyllosilicates - major
CHLORITE (Mg,Fe2+)5Al(AlSi3O10)(OH)8 phyllosilicates chlorite minor
KAOLINITE Al2Si2O5(OH)4 phyllosilicates kaolinite minor
Description
Description: block (7 cm) with greenish chloritic coating
Origin
  • Country: Italy
  • Region: Sardegna
  • Locality: Rosas
Specification
  • Donors: Polinard
    Donation year: 1954
  • Sampling year:
    Registration date:
  • Quantity: 1
    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: yes
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