Byssolite
Hardness: 5,5-6 Color: green, bluish-green Formula: Ca2(Mg,Fe 2+)5Si8O22(OH)2 Crystal System: monoclinic The greek origin name which roughly means ’bearded envoy’, was given by Horace Bénédict de Saussure swiss geologist, physicist and alpinist in 1796. It is an interesting, asbestos like variety of actinolite which is a member of the amphibole group. Byssolite usually issues in...