bergmannite मीनिंग इन हिंदी

Several varieties of natrolite have been distinguished by special names . "'Fargite "'is a red natrolite from Glenfarg in Perthshire . "'Bergmannite "', or "'Spreustein "', is an impure variety which has resulted by the alteration of other minerals, chiefly sodalite, in the augite syenite of southern Norway.