Thomsonite

Hardness ( Moh )

" 5 - 5.5

Crystal System

Orthorhombic

Specific Gravity

2.35

Refractive Index

1.497 - 1.544

Birefringence

Family

Colour(s)

colorless, white, beige, pink

Cleavage

Francture Type

Luster

Streak

White

Transparency

transparent to translucent

Formula

NaCa2Al5Si5O20·6H2O

Country

Found In Afghanistan,Algeria,Antarctica,Argentina,Australia,Austria,Bosnia and Herzegovina,Bulgaria,Cambodia,Canada,Chile,China,Costa Rica,Czech Republic,Faroe Islands,Finland,France,Germany,Greenland,Hungary,Iceland,India,Iran,Israel,Italy,Japan,Jordan,Kenya,Korea,Madagascar,Mauritius,Mexico,Middle East,Mozambique,Myanmar,New Zealand,North America,Norway,Philippines,Poland,Portugal,Romania,Russia,Slovakia,Solomon Islands,South Africa,Spain,Sweden,Switzerland,Taiwan,Turkey,UK,Ukraine,USA