Rossmanite Mineral Data

General Rossmanite Information
Chemical Formula:	[ ]LiAl2Al6(Si6O18)(BO3)3(OH)4
Composition:	Molecular Weight = 923.75 gm
	Lithium 0.75 % Li 1.62 % Li₂O
	Aluminum 23.37 % Al 44.15 % Al₂O₃
	Silicon 18.24 % Si 39.03 % SiO₂
	Boron 3.51 % B 11.30 % B₂O₃
	Hydrogen 0.44 % H 3.90 % H₂O
	Oxygen 53.69 % O
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	LiAl₈Si₆O₁₈(BO₃)₃(OH)₄
Environment:	Granitic pegmatite hosted by biotite and hornblende gneiss.
IMA Status:	Approved IMA 1998 (Dana # Added)
Locality:	Found in the Hradisko quarry, in the Rozn� lepidolite subtype of granitic pegmatite, northeastern part of the Str�zek Moldanubicum, Czech Republic. Link to MinDat.org Location Data.
Name Origin:	Named after George R. Rossman (1945-), California Institute of Technology, Pasadena, CA, USA, in recognition for his work on the spectroscopy of the tourmaline minerals.
Name Pronunciation:	Rossmanite + Pronunciation
Synonym:	ICSD 85557
	IMA1996-018
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