Bredigite Mineral Data

General Bredigite Information
Chemical Formula:	Ca7Mg(SiO4)4
Composition:	Molecular Weight = 673.18 gm
	Calcium 41.67 % Ca 58.31 % CaO
	Magnesium 3.61 % Mg 5.99 % MgO
	Silicon 16.69 % Si 35.70 % SiO₂
	Oxygen 38.03 % O
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	Ca₇Mg(SiO₄)₄
Environment:	In contact metamophosed limestones and dolostones intruded by diabase.
IMA Status:	Valid Species (Pre-IMA) 1948
Locality:	In the USA, at Marble Canyon, Culberson Co., Texas. In Ireland, at Scawt Hill and Ballycraigy, near Larne, Co. Antrim. Link to MinDat.org Location Data.
Name Origin:	For Max Albrecht Bredig (1902- ), physical chemist, who studied the polymorphism of Ca2SiO4.
Name Pronunciation:	Bredigite + Pronunciation
Synonym:	ICSD 9828
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