Minerals identify

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Clinozoisite

Sorosilicates,epidote group

Clinozoisite is a complex calcium sorosilicate mineral with formula: Ca2Al3(Si2O7)(SiO4)O(OH). It forms a continuous solid solution series with epidote by substitution of iron(III) in the aluminium (m3 site) and is also called aluminium epidote.

Clinothulite is a manganese bearing variety with a pinkish hue due to substitution of Mn(III) in the aluminium site.

It was originally discovered in 1896 in East Tyrol , Austria and its monoclinic

It occurs in rocks which have undergone low to medium grade regional metamorphism and in contact metamorphism of high calcium sedimentary rocks. It also occurs in saussurite

Jadeite bearing pyroxene minerals have suggested Clinozoisite and paragonite are associated and derived from lawsonite and water via the following reaction:

4 CaAl 2 Si 2 O 8 ( H 2 O) 2 + NaAlSi 2 O 6 ↽ − − ⇀ 2 Ca 2 Al 3 Si 3 O 12 ( OH ) + NaAl 3 Si 3 O 10 ( OH) 2 + SiO 2 + 6 H 2 O {\displaystyle {\ce {4CaAl2Si2O8(H2O)2 + NaAlSi2O6 <=> 2Ca2Al3Si3O12(OH) + NaAl3Si3O10(OH)2 + SiO2 + 6H2O}}} {\displaystyle {\ce {4CaAl2Si2O8(H2O)2 + NaAlSi2O6 <=> 2Ca2Al3Si3O12(OH) + NaAl3Si3O10(OH)2 + SiO2 + 6H2O}}}

Identification

Color of mineral

Green
Grey
Yellow
Pink

Mohs scale ( mineral hardness )

6
7

The streak

White

Density ( specific gravity )

1.706
1.708
1.712

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Monoclinic