Editing Internet Texts/Gemstones/Brazilianite

Brazilianite

edit

The mineral was first discovered by Alfredo Severino de Silva when he was plowing his field in Minas Gerais (Brazil).[1]

Brazilianite can be colorless or in different shades of brown, but the most common varieties are of lemon yellow or yellow-green colors. High level of transparency and beautiful, glassy lustre make the stone a valuable one.[1]

 
Brazilianite

Basic properties

edit
Composition NaAl3[OH2|PO4]
Class Phosphates
Crystal system Monoclinic
Mohs' hardness 5,5
Fracture Conchoidal
Cleavage Perfect
Lustre Glassy
Streak White
Localities Brazil, USA, Rwanda

References

edit
  1. 1.0 1.1 Minerały i kamienie szlachetne by RBA Collecionables, S.A., ISBN 978-83-7813-150-2, 2012.