Liddicoatite Mineral Data

General Liddicoatite Information
Chemical Formula:	Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4
Composition:	Molecular Weight = 917.49 gm
	Sodium 0.75 % Na 1.01 % Na₂O
	Lithium 1.21 % Li 2.61 % Li₂O
	Calcium 3.06 % Ca 4.28 % CaO
	Aluminum 18.23 % Al 34.45 % Al₂O₃
	Silicon 18.37 % Si 39.29 % SiO₂
	Boron 3.53 % B 11.38 % B₂O₃
	Hydrogen 0.32 % H 2.85 % H₂O
	Oxygen 52.66 % O
	Fluorine 1.86 % F 1.86 % F
	- % F -0.78 % -O=F₂
	______ ______
	100.00 % 96.95 % = TOTAL OXIDE
Empirical Formula:	Ca_0.7Na_0.3Li_1.6Al_6.2(BO₃)₃Si₆O_18.3(OH)_2.9F_0.9
Environment:	Detrital in soil, an apparent alluvial product of the local pegmatites.
IMA Status:	Approved IMA 1977 (Dana # Changed)
Locality:	From Antsirabe, Tsilaizina, and Anjanabonoina, Madagascar. Link to MinDat.org Location Data.
Name Origin:	Named for Richard T. Liddicot (1918-2003), gemologist, who invented the diamond grading system, for his many contributions to the Gemological Institute of America.
Name Pronunciation:	Liddicoatite + Pronunciation
Synonym:	Liddicoatite - (61.3.1.2)
	Tourmaline