Numanoite Mineral Data

General Numanoite Information
Chemical Formula:	Ca4CuB4O6(OH)6(CO3)2
Composition:	Molecular Weight = 573.17 gm
	Calcium 27.26 % Ca 38.14 % CaO
	Magnesium 0.61 % Mg 1.02 % MgO
	Zinc 0.41 % Zn 0.51 % ZnO
	Copper 8.58 % Cu 9.66 % Cu₂O
	Boron 7.49 % B 24.10 % B₂O₃
	Hydrogen 1.09 % H 9.76 % H₂O
	Carbon 4.31 % C 15.81 % CO₂
	Oxygen 50.25 % O
	______ ______
	100.00 % 99.00 % = TOTAL OXIDE
Empirical Formula:	Ca_3.89Cu_0.77Mg_0.14Zn_0.03B_3.96O_5.61(OH)_6.2(CO₃)_2.05
Environment:	Occurs as 1 to 5 mm cores in crystals or veins of boracite in a skarn with cavities and veins in crystalline limestone. Cu-dominant analogue of borcarite.
IMA Status:	Approved IMA 2005 (Dana # Added)
Locality:	Fuka mine, Fuka, Bitchu-cho, Takahashi City, Okayama Prefecture, Japan. Link to MinDat.org Location Data.
Name Origin:	Named for Tadayuki Numano (1931-2001), Emeritus Professor of Okayama University.
Synonym:	IMA2005-050