This website uses cookies
By clicking on "accept" you agree that this website uses "cookie" technology. Your web browser stores a random but unique string that allows this website to recognize when a user returns (anonymous, as long as no data has been entered in our order or contact form). This technology is vital for the proper functioning of this website, e.g. that language selection and shopping cart remain when a new page is opened.
Data policy




Synonyms:  Black Moonstone, Carnatite, Labrador Felspar, Labrador Moonstone, Mauilite, Opaline Feldspar, Radauite, Silicite
Variety of:  Anorthite
Classification:  Silicates, Tektosilicates, Feldspar Group
Chemical formula: (Ca,Na)[Al(Al,Si)Si2O8]
Crystal system:  triclinic
Density (g/cm3):  2,8 measured
Cleavage:  Perfect on (001), distinct on (010)
Fracture:  Uneven to conchoidal
Hardness (Mohs):  6-6,5
Colour:  Pale green, blue, colourless, grey-white
Lustre:  Sub-Vitreous, dull
Streak:  White
Type locality:  Ford Harbour, Paul Island, Labrador, Newfoundland and Labrador, Canada
Application:  Gemstone, Ornamental stone,



TOPGEO Mineralienhandel GmbH
Dr. Petr Zajicek
Commercial register:
HRB 671194 Amtsgericht Ulm
VAT-Id: DE147815490
Gersbach 10
74589 Satteldorf
Telephone: +49 7950 1345
Telefax: +49 7950 8483
eMail: |