Calcybeborosilite-(Y) Mineral Data

General Calcybeborosilite-(Y) Information
Chemical Formula:	(REE,Ca)2[ ](B,Be)2(SiO4)2(OH,O)2
Composition:	Molecular Weight = 437.09 gm
	Calcium 9.17 % Ca 12.83 % CaO
	La,Ce,Pr,Nd,Sm, 32.95 % RE 38.44 % REE₂O₃
	Beryllium 1.24 % Be 3.43 % BeO
	Iron 3.83 % Fe 4.93 % FeO
	Silicon 12.85 % Si 27.49 % SiO₂
	Boron 2.97 % B 9.56 % B₂O₃
	Hydrogen 0.32 % H 2.89 % H₂O
	Oxygen 36.24 % O
	Fluorine 0.43 % F 0.43 % F
	- % F -0.18 % -O=F₂
	______ ______
	100.00 % 99.82 % = TOTAL OXIDE
Empirical Formula:	REECaFe²⁺_0.3B_1.2Be_0.6Si₂O_8.5(OH)_1.4F_0.1
Environment:	Paleozoic alkaline granites intruding Silurian-aged rocks with a high content of boron. Probable intermediate composition between dataolite and hingginite-(Ce).
IMA Status:	Not Approved IMA 1963 (Dana # Added)
Locality:	Dara-i-Pioz massif on the southern slope of the Altai Range in Tajikistan. Link to MinDat.org Location Data.
Name Origin:	Named after it's composition of calcium, beryllium, boron and silicon.
Synonym:	Calcybeborosilite
	Yttrian Datolite