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Vaterite

About

Major constituent of a carbonated calcium silicate hydrogel complex formed from larnite.

Trimorphous with aragonite and calcite; metastable below 400 deg C.
Valid Species (Pre-IMA) 1911

Type Locality
Ballycraigy, Larne, County Antrim, Northern Ireland, UK
Mineral Data
CaCO3
Polymorph of: 
Strunz: 
5.AB.20
Physical Properties
Colour: 
Colorless
Streak: 
White
Hardness: 
3.0
Tenacity: 
brittle
Photos