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Mineralogical Magazine; October 2001; v. 65; no. 5; p. e689-e694
© 2001 Mineralogical Society of Great Britain and Ireland
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New minerals approved in 2000 by the Commission on New Minerals and Mineral Names (CNMMN) International Mineralogical Association

J. D. Grice, (Chairman, CNMMN)1,* and G. Ferraris, (Vice-Chairman, CNMMN)2

1 Canadian Museum of Nature, P.O. Box 3443A, Station ’D’, Ottawa, Ontario, Canada K1P 6P4
2 Dipartimento di Scienze Mineralogiche e Petrologiche, Università di Torino, Via Valperga Caluso 35, I-10125 Torino, Italy

* E-mail: jgrice@mus-nature.ca

NO OTHER INFORMATION WILL BE RELEASED BY THE COMMISSION

The first 20% of the full text of this article appears below.


  
 
The information given here is provided by the Commission on New Minerals and Mineral Names, I.M.A., for comparative purposes and as a service to mineralogists working on new species.

Each mineral is described in the following format:

IMA No.

Chemical Formula (any relationship to other minerals)

Crystal system, space group unit cell parameters

Colour; lustre; diaphaneity.

Optical properties.

Strongest lines in the X-ray powder diffraction pattern.

The names of these approved species are considered confidential information until the authors have published their descriptions or released information themselves.


   2000 PROPOSALS
 
IMA No. 2000-001

Cu2Fe3+(As5+O4)(As3+O2(OH)2·H2O New structure type
Orthorhombic: Pnma
a 9.553, b 13.099, c 8.0640 Å
Pistachio green; vitreous; transparent
Biaxial (–), {alpha} 1.80(5), ß 1.84(5), {gamma} 1.86(5), 2V(meas) = 65(5)°, 2V(calc) = 69(3)°
88(25), 6.161(90), 3.861(20), 3.231(40), 3.080(100), 2.700(25), 2.211(25)

IMA No. 2000-002

NaCu4(AsO4)3 Alluaudite-wyllieite group; structure
Monoclinic: C2/c
a 12.051, b 12.434, c 7.2662 Å, ß 117.94°
Dark-blue; strong vitreous; translucent
Biaxial (–), {alpha} 1.76, ß 1.92, {gamma} 1.96, 2V(calc) 49.5° 6.22(13), 3.60(21), 3.43(100), 3.21(35), 2.791(24), 2.696(18), 2.683(30)

IMA No. 2000-003

Ba3[(Si,Al)4O8]OCl[Cl,(H2O)]4 Cymrite-like; structure
Hexagonal: P63mc
a 5.243, c 29.859 Å
Light-blue grey; vitreous; translucent
Uniaxial (–), {omega} 1.642, {varepsilon} 1.594
67(100), 3.883(100), 3.357(50), 2.988(60), 2.887(50), 2.616(70)

IMA No. 2000-004

Bi(OH)SO4·H2O Second natural bismuth sulfate
Monoclinic: P21/n
a 6.0118, b 13.3355, c 6.4854 Å, ß 112.91°
Light beige to light grey; vitreous; translucent
{eta} 1.78
453(42), 5.193(32), 5.115(37), 4.260(100), 3.335(42), 3.113(36), 2.915(22)

IMA No. 2000-005

Ca2Mn3O2(AsO4)2(CO3)·3H2O Mitridatite type
Monoclinic: Cm
a 11.253, b 19.628, c 8.932 Å, ß 100.05°
Dark red-brown to black; vitreous; translucent
Biaxial (–), {alpha} 1.757, ß {approx} {gamma} {Delta}ß{gamma} = 0.004, 2V(meas) ~32°
796(100), 5.654(31), 2.934(76), 2.886(23), 2.816(24), 2.769(39), 2.201(57)

IMA No. 2000-006

Mg(HCO2)2·2H2O Second . . . [Full Text of this Article]






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