Actinolite
Hardness: 5,5-6 Color: green Formula: Ca2(Mg,Fe)5 Si8O22(OH2) Crystal System: monoclinic Richard Kirwan named actinolite in 1794, its name origins from the Greek aktina and lithos words referring to its look, the mixture of the bladed radiating crystals with interesting patterns. This mineral is a type of asbestos, its consistence is simular to the tremolite mineral,...
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