Mineralogy and Petrology (2004) 80: 97–110
DOI 10.1007/s00710-003-0008-2
NEW MINERALS APPROVED IN 2002
NOMENCLATURE MODIFICATIONS APPROVED 1998–2002
BY THE
COMMISSION ON NEW MINERALS AND MINERAL NAMES
INTERNATIONAL MINERALOGICAL ASSOCIATION
J. D. Grice1 and G. Ferraris2
1
Chairman-Emeritus CNMMN, Canadian Museum of Nature, Ottawa,
Ontario, Canada
2
Vice-Chairman CNMMN, Dipartimento di Scienze Mineralogiche e Petrologiche,
Universita di Torino, Torino, Italy
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; structure analysis)
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.
NO OTHER INFORMATION WILL BE RELEASED BY THE COMMISSION.
Note: New mineral proposals should be sent to the new Chairman: E. A. J. Burke, Faculty of Earth
and Life Sciences, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands,
e-mail: ernst.burke@falw.vu.nl
98
IMA Notice
2002 PROPOSALS
IMA No. 2002-001
(Ce,La,Nd,Ba)(Fe3 þ ,Al)3[(As,Al)O4]2(OH)6
Fe-dominant analogue
of arsenoflorencite-(Ce)
Trigonal: R
3m
a 7.260, c 16.77 Å
Light-green to brownish; resinous; transparent
Uniaxial (), mean refractive index ¼ 1.97
5.906(25), 3.636(40), 3.052(100), 2.792(30), 2.239(35), 1.817(35)
IMA No. 2002-002
(&,K)1(Mg, Fe2 þ )3Fe3þ 2 [Si12O30]
Milarite group; structure determined
Hexagonal: P6=mcc
a 10.050, c 14.338 Å
Deep blue to yellowish-green; vitreous; translucent
Uniaxial (), ! 1.589, " 1.586
8.70(97), 7.17(100), 5.535(96), 5.026(61), 4.352(53), 3.207(85)
IMA No. 2002-003
NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 7H2O
Labuntsovite group; structure determined
Monoclinic: Cm
a 14.495, b 13.945, c 7.838 Å, 117.75
White, pale-brown; vitreous; translucent to transparent
Biaxial (þ), 1.680, 1.687, 1.787, 2V(meas.) 25 , 2V(calc.) 31
6.96(100), 3.21(80), 3.11(90), 2.60(35), 2.50(40), 1.74(30), 1.70(40)
IMA No. 2002-004
Kieserite group
CoSO4 H2O
Monoclinic: C2=c
a 6.980, b 7.588, c 7.639 Å, 118.65
Pink; powdery; transparent
Biaxial (þ), n 1.65 (calc.)
4.83(33), 3.405(100), 3.339(34), 3.291(32), 3.062(56), 2.567(30), 2.513(49)
IMA No. 2002-005
(K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2 3H2O
Labuntsovite group; structure determined
Monoclinic: Cm
a 14.327, b 13.802, c 7.783 Å, 116.95
Light brown, white, and colourless; vitreous; transparent
Biaxial (þ), 1.689, 1.700, 1.775, 2V(meas.) 35 , 2V(calc.) 43
6.87(100), 4.85(50), 3.95(50), 3.20(60), 3.05(80), 3.00(60), 2.56(90)
IMA No. 2002-006
(Ba,Na,K)2 x(Ti,Nb)2(Si4O12)(OH,O)2 4H2O
Monoclinic: C2=m
a 14.551, b 14.001, c 15.702 Å, 117.58
Brown; vitreous; transparent
Labuntsovite group; structure determined
IMA Notice
99
Biaxial (þ), 1.667, 1.674, 1.770, 2V(meas.) 30 , 2V(calc.) 31
7.11(100), 4.08(80), 3.95(100), 3.24(90), 3.11(80), 2.403(80), 1.914(90)
IMA No. 2002-007
Labuntsovite group; structure determined
NaK3Fe(Ti,Nb)4(Si4O12)2(O,OH)4 6H2O
Monoclinic: Cm
a 14.450, b 13.910, c 7.836 Å, 117.42
Pale-brown; vitreous; translucent to transparent
Biaxial (þ), 1.677, 1.684, 1.790, 2V(meas.) 25 , 2V(calc.) 30
6.93(100), 4.93(80), 3.21(100), 3.11(90), 2.62(60), 2.49(50), 1.687(40)
IMA No. 2002-008
Na2H(PO4) 8H2O
New structure type
Orthorhombic: Ibca
a 11.488, b 11.647, c 16.435 Å
Colourless; vitreous to resinous; transparent
Biaxial (), 1.443, 1.457, 1.458, 2V(meas.) 29 , 2V(calc.) 30
5.78(40), 4.90(43), 4.73(62), 3.75(81), 2.876(77), 2.782(100), 2.744(74)
IMA No. 2002-010
NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2
Amphibole group; structure determined
Monoclinic: C2=m
a 9.666, b 17.799, c 5.311 Å, 104.10
Bluish-grey; lustre not given; translucent
Biaxial (þ), 1.633, 1.624, 1.626, 2V medium; calculated from chemical composition
8.31(64), 4.45(26), 3.38(42), 3.079(58), 2.691(100), 2.571(32), 2.532(47)
IMA No. 2002-011
GaO(OH)
Isostructural with goethite
Orthorhombic: Pbnm
a 4.512, b 9.772, c 2.967 Å
Pale greenish yellow to beige; pearly; translucent
Biaxial, n(calc.) 1.96
4.09(100), 2.632(33), 2.530(22), 2.404(100), 1.690(26), 1.538(21)
IMA No. 2002-012
Na2(Na,Ca)4Ca4(Mn,Ca)2Zr2Ti2(Si2O7)4(O,F)4F4
Rosenbuschite group;
structure determined
Triclinic: P
1
a 10.032, b 11.333, c 7.202 Å, 90.19, 100.33, 111.55
Colourless to pale shade of brown; vitreous; transparent
Biaxial (þ), 1.684, 1.695, 1.718, 2V(meas.) 73 , 2V(calc.) 70
3.951(30), 3.028(60), 2.908(100), 2.600(80), 1.868(60), 1.670(50)
IMA No. 2002-013
Ba3NaCe(PO4)3(F,Cl)
Ba-dominant analogue of belovite-(Ce); structure determined
Trigonal: P
3
a 9.909, c 7.402 Å
Light rose; vitreous; translucent
100
IMA Notice
Uniaxial (), ! 1.694, " 1.669
4.078(40), 3.693(40), 2.969(100), 2.867(60), 1.965(80), 10863(60)
IMA No. 2002-014
Pb3[(UO2)6O8(OH)2](H2O)x; x 3
New structure type
Monoclinic: C2=c
a 28.355, b 11.990, c 13.998 Å, 104.248
Bright orange; vitreous; transparent
Biaxial, nmin 1.807, nmax 1.891
6.92(60), 6.02(30), 3.46(80), 3.10(100), 2.74(30), 2.01(30), 1.918(60)
IMA No. 2002-015
BaBe2Si2O7
Dimorphous with barylite; structure determined
Monoclinic: Pm
a 11.637, b 4.918, c 4.668 Å, 89.80
Colourless; vitreous; transparent
Biaxial (þ), 1.698, 1.700, 1.705, 2V(meas.) 70 , 2V(calc.) 65
3.39(84), 3.25(45), 3.04(40), 2.926(55), 2.458(100), 2.335(48), 2.076(38)
IMA No. 2002-016
CaFe2 þ Fe3 þ (Mn,Fe2 þ )(Si2O7)O(OH)
Mn-dominant analogue of ilvaite
Monoclinic: P21=a
a 13.0246, b 8.8511, c 5.8485 Å, 90.17
Black; vitreous; opaque
In reflected light (in air): grey to bluish grey; internal reflections: red; anisotropy: strong in
blue-greyish. Rmin and Rmax: 8.3–10% (460 nm), 7.5–9.8% (540 nm), 7–9.7% (580 nm),
6.1–9.5% (640 nm)
2.875(85), 2.848(90), 2.718(100), 2.687(70), 2.180(48), 2.111(47), 1.475(48)
IMA No. 2002-017
MnV2O6 4H2O
New structure type
Monoclinic: C2=c
a 13.171, b10.128, c 6.983 Å, 111.57
Carmine red; adamantine; transparent
Biaxial, nmin 1.797, nmax 1.856
7.82(100), 5.69(20), 5.06(20), 4.51(30), 3.91(30), 3.029(70)
IMA No. 2002-018
(Mg,Fe)(Ta,Nb)2O6
Columbite-tantalite group
Orthorhombic: Pbcn
a 14.355, b 5.735, c 5.058 Å
Black; semi-metallic to metallic; opaque
Light-grey; internal reflections (in air): brownish-red; anisotropism: weak; bireflectance: very
weak. Rmin and Rmax: 13.97–12.82% (460 nm), 13.33–13.20% (540 nm), 14.25–13.94%
(580 nm), 15.61–15.31% (640 nm)
3.67(60), 2.96(100), 1.774(60), 1.728(70), 1.462(90), 1.196(60), 1.105(60)
IMA Notice
IMA No. 2002-019
Ba2(La,Th,Ce)(CO3)3F
101
La-dominant analogue of kukharenkoite-(Ce);
structure determined
Monoclinic: P21=m
a 13.396, b 5.111, c 6.672 Å, 106.63
Pale leek-green, colourless, white; vitreous; transparent to translucent
Biaxial (), 1.581, 1.715, 1.715, 2V(meas.) 5 , 2V(calc.) 0
4.01(100), 3.27(100), 2.54(50), 2.38(20), 2.14(80), 1.998(80), 1.636(20)
IMA No. 2002-020
(Ca,K,Na)2 x(Ti,Nb)2(Si4O12)(OH,O)2 4H2O
Labuntsovite group; structure determined
Monoclinic: C2=m
a 14.484, b 14.191, c 7.907 Å, 117.26
White, pale brownish; vitreous; transparent
Biaxial (þ), 1.666, 1.676, 1.780, 2V(meas.) 30 , 2V(calc.) 36
7.02(60), 6.38(40), 3.53(45), 3.16(100), 2.62(45), 2.51(85), 1.718(50)
IMA No. 2002-021
(Na,K,Ca)48Si36Al36O144[(SO4)8Cl2] 3H2O
Cancrinite-sodalite group;
structure discussed
Hexagonal or trigonal: P
62c or P31c
a 12.880, b 31.761 Å
Colourless; vitreous; transparent
Uniaxial (þ), " 1.497, ! 1.495
4.20(42), 3.725(100), 3.513(80), 3.296(35), 3.089(40), 2.555(35), 2.150(40)
IMA No. 2002-022
Hg1 þ Hg2 þ OI
Related to terlinguaite; new structure type
Monoclinic: C2=c
a 17.580, b 6.979, c 6.693 Å, 101.71
Dark grey-black; metallic; opaque
Calculated index of refraction: 2.35–2.38
8.55(70), 3.275(100), 2.993(80), 2.873(80), 2.404(50), 1.878(50)
IMA No. 2002-023
Ce2Si2O7
Isostructural with Ln2Si2O7
Tetragonal: P41
a 6.781, c 24.689 Å
White to colourless; resinous; transparent
Uniaxial (þ), ! 1.840, " 1.846
3.27(31), 3.14(27), 3.12(24), 3.08(100), 3.011(18), 2.846(22), 2.034(19)
IMA No. 2002-024
(Cu4.7Ag3.3)8GeS6
Argentian variety of -Cu8GeS6
Cubic: F
43m
a 10.201 Å
Iron-black; vitreous to metallic; opaque
In reflected light (air): pale rose-brownish; internal reflections: no; Rmin and Rmax: 29.4%
(460 nm), 23.6% (560 nm), 26.0% (580 nm), 25.3% (640 nm)
5.90(30), 3.07(60), 2.943(100), 1.962(50), 1.805(70)
102
IMA Notice
IMA No. 2002-025
Related to epidote group; structure determined
Ce3CaMg2Al2Si5O19(OH)2F
Monoclinic: P21=m
a 8.939, b 5.706, c 15.855 Å, 94.58
Dark brown; vitreous
Biaxial (þ), 1.781, 1.792(calc.), 1.810, 2V(meas.) 75 , 2V(calc.) 78
4.64(10), 3.50(20), 2.979(100), 2.847(10), 2.682(13), 2.622(19), 2.185(15)
IMA No. 2002-026
(Na,Ca)6(Ca,Na)3Si16O38(F,OH)2 3H2O
Reyerite group; structure determined
Triclinic: P
1
a 9.613, b 12.115, c 9.589 Å, 92.95, 119.81, 96.62
Colourless; pearly
Biaxial (), 1.522, 1.528, 1.529, 2V(meas.) 48 , 2V(calc.) 44
11.99(100), 5.97(85), 3.97(40), 2.967(50), 2.888(100), 1.820(50)
IMA No. 2002-027
BaB2Si2O8
Ba-dominant analogue of danburite; structure determined
Orthorhombic: Pnma
a 8.141, 8.176, c 9.038 Å
White; vitreous; transparent
Biaxial (), 1.649, 1.656, 1.656, 2V(meas.) 5 , 2V(calc.) 0
6.07(60), 4.86(30), 3.62(100), 3.39(60), 2.83(50), 2.481(40), 2.021(70)
IMA No. 2002-028
Ca0.3(Fe2 þ ,Mg,Fe3 þ )3(Si,Al)4O10(OH)2 4H2O
Smectite group
Monoclinic: probably C-cell
a 5.363, b 9.306, c 14.64 Å, 94.98
Dark-green, brownish-green; vitreous; translucent
Biaxial (), 1.448 (calc.), 1.641, 1.642; 2V(meas.) 5 , 2V(calc.) 7.5
7.37(90), 4.72(90), 3.80(80), 3.03(100), 2.585(90), 2.429(90), 1.549(90)
IMA No. 2002-029
Mn-dominanat analogue of kukisvumite
Na6MnTi4Si8O28 4H2O
Orthorhombic: Pccn
a 29.05, b 8.612, c 5.220 Å
Colourless; vitreous; transparent
Biaxial (), (calc.) 1.657, 1.744, 1.792, 2V(meas.) 70 , 2V(calc.) 70
14.47(100), 6.43(20), 4.83(10), 3.025(40), 2.881(20)
IMA No. 2002-030
Mg2(BO3)F
Isostructural with Mg2(BO3)F; structure determined
Orthorhombic: Pna21
a 20.490, b 4.571, c 11.890 Å
Colourless; vitreous; transparent
Biaxial (þ), 1.609, 1.620, 1.642, 2V(meas.) 65 , 2V(calc.) 71
2.743(77), 2.474(49), 2.414(46), 2.241(100), 2.234(49), 1.708(92), 1.705(44)
IMA Notice
103
IMA No. 2002-031
K and REE analogue of Na3 Y [Si6O15]; structure determined
Na2K(Y,REE) [Si6O15]
Orthorhombic: Ibmm
a 10.623, b 14.970, c 8.552 Å
White; vitreous; transparent
Biaxial (þ), 1.555, 1.558, 1.566, 2V (meas.) 64 , 2V (calc.) 63
5.32(35), 4.98(100), 3.45(50), 3.26(85), 3.05(75), 2.753(42), 2.490(45)
IMA No. 2002-033
Related to vinogradovite; structure determined
Na1–2(Ti,Fe3 þ )4(Si7Al)O22(OH)4(H2O)
Triclinic: P1
a 5.2533, b 8.7411, c 12.9480 Å, 70.47, 78.47, 89.93
White; vitreous; translucent to transparent
Biaxial (), 1.707, 1.741, 1.755, 2V(meas.) 64 , 2V(calc.) 64
11.9(58), 5.98(35), 5.88(65), 4.35(38), 3.182(100), 3.085(29), 2.735(21)
IMA No. 2002-034
CdSO4 4H2O
Rozenite group
Monoclinic: P21=n
a 6.5859, b 14.329, c 8.5712 Å, 91.51
Colourless to light blue; vitreous; transparent
Uniaxial (), 1.430, 1.454, 1.470, 2V(meas.) 70 , 2V(calc.) 77.3
5.98(85), 4.84(70), 3.146(85), 2.967(85), 2.708(75), 2.654(100)
IMA No. 2002-035
(&,Cu2 þ ,V3 þ )8 Al8 (PO4)8 F8 (H2O)23
New structure type
Orthorhombic: Pmmn
a 12.123, b 18.999, c 4.961 Å
Pale green to turquoise; vitreous; translucent
Biaxial (), 1.540, 1.548, 1.553, 2V(meas.) 76 , 2V(calc.) 76
9.54(80), 6.08(100), 5.62(90), 3.430(40), 2.983(60), 2.661(40)
IMA No. 2002-036
(Ba,Ca)2Al3(Si,Al)4O10(CO3)(OH)6 nH2O
Surite series
Monoclinic: C2=m, C2 or Cm
a 5.176, b 8.989, c 16.166 Å, 96.44
White with light-greenish tint; pearly; translucent
Biaxial (), 1.580, 1.625, 1.625, 2V(meas.) 0–10 , 2V(calc.) 0
4.49(90), 3.68(60), 2.585(100), 2.230(90), 2.069(80), 1.692(60)
IMA No. 2002-037
(Ca,Na)(Ba,K)(Fe2 þ ,Mn)4Ti2(Si4O14)O2(F,OH,O)3
Bafertisite series;
structure determined
Monoclinic: C2
a 10.723, b 13.826, c 20.791 Å, 95.00
Brownish red; vitreous; transparent to translucent
Biaxial (), 1.790(calc.), 1.858, 1.888, 2V(meas.) 65
10.39(20), 3.454(100), 3.186(15), 2.862(15), 2.592(70), 2.074(40), 1.728(15)
104
IMA Notice
IMA No. 2002-038
Hulsite group; structure determined
Mg2(Al1–2xMgxSnx)(BO3)O2
Monoclinic: P2=m
a 5.3344, b 3.0300, c 10.506) Å, 94.46
Brown to blue-green in transmitted light; lustre not observed; transparent
Biaxial (þ), 0 1.78, 0 1.805, 2V(meas.) 33 , 2V(calc.) 39
10.47(29), 5.24(49), 4.90(32), 2.618(50), 2.532(100), 2.318(30), 2.001(54), 1.515(28)
IMA No. 2002-039
Hg1þ 4 AlðPO4 Þ1:74 ðOHÞ1:78
New structure type
Monoclinic: C2=c
a 17.022, b 9.074, c 7.015 Å, 101.20
Colorless to white; vitreous; transparent to translucent
Biaxial (þ), n(calc.) 1.94
8.33(100), 4.74(50), 2.979(80), 2.952(50), 2.784(80), 2.660(75)
IMA No. 2002-041
KPb1.5ZnCu6O2(SeO3)2Cl10
New structure type
Orthorhombic: Pnnm
9.132, b 19.415, c 13.213 Å
Olive green; vitreous; transparent
Biaxial (), no refractive indices given
8.26(70), 7.63(60), 4.11(90), 3.660(100), 2.996(40), 2.887(50), 2.642(40)
IMA No. 2002-043
Na2(Ba,K)6Ce2Fe2 þ Ti3Si12O36(OH)3(OH,H2O)9
New structure type
Trigonal: R
3
a 10.713, c 60.67 Å
Yellowish orange; vitreous; transparent
Uniaxial (þ), ! 1.705, " 1.708
10.12(27), 3.236(100), 3.094(21), 2.654(38), 2.642(44), 2.234(19), 2.026(61)
IMA No. 2002-047
Zn2Te3O8
Related to spiroffite
Monoclinic: C2=c
a 12.676, b 5.198, c 11.781 Å, 99.6(1)
Grey; vitreous; translucent
In reflected light (air): grey; internal reflections not observed, anisotropy weak. Rmin and Rmax:
6.7–7.3% (460 nm), 7.4–7.8% (540 nm)
4.76(w), 3.240(w), 2.928(m), 2.820(w), 2.155(w), 1.985(w), 1.599(w)
IMA No. 2002-048
K(&,Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30]
Milarite group; structure determined
Hexagonal: P6=mcc
a 9.997, c 14.090 Å
Yellow to orange; vitreous; transparent
Uniaxial (), ! 1.560, " 1.559
7.05(40), 5.00(40), 4.08(80), 3.187(90), 2.882(100), 2.732(50), 1.826(40)
IMA Notice
IMA No. 2002-049
(Mn2 þ ,Ca)(Ce,REE)AlMn3 þ Mn2 þ Si2O7 SiO4 O(OH)
105
Epidote group;
structure determined
Monoclinic: P21=m
a 8.901, b 5.738, c 10.068 Å, 113.425
Dark brown; vitreous to adamantine; transparent
Biaxial (þ), > 1.74, 2V(meas.) 81
3.51(37), 2.896(100), 2.713(34), 2.707(43), 2.622(58), 2.591(32), 2.185(31)
IMA No. 2002-050
Ca4AlSi(SO4)F13 12H2O
Related to chukhrovite-(Ce)
Cubic: Fd
3
a 16.722 Å
White to yellowish; vitreous; transparent
Isotropic; n(calc.) 1.430
9.63(100), 5.91(46), 5.04(27), 4.17(19), 3.219(32), 2.235(28), 2.178(33)
IMA No. 2002-051
(Na,K)Ca2(Mg3Al2)Si5Al3O22(OH)2
Amphibole group; structure determined
Monoclinic: C2=m
a 9.905, b 18.00, c 5.322 Å, 105.47
Brownish black; vitreous; translucent
Biaxial (þ), 1.674, (calc.) 1.683, 1.694, 2V(meas.) 85
8.47(70), 3.38(60), 3.13(70), 2.70(100), 2.59(70), 2.57(100), 2.16(60), 1.447(60)
IMA No. 2002-052
K[(Al,Zn)2(As,Si)2O8]
Feldspar group; structure determined
Monoclinic: C2=c
a 13.416, b 13.370, c 8.772 Å, 100.067
Colorless; vitreous; transparent
Biaxial (), 1.532, 1.535, 1.537, 2V(meas.) 60 ; 2V(calc.) 78
4.33(70), 3.90(70), 3.364(100), 3.300(50), 3.066(40), 2.981(60), 2.646(40)
IMA No. 2002-053
Tl6Ag3Cu6As9S21
Related to imhofite; structure determined
Triclinic: P
1
a 12.138, b 12.196, c 15.944 Å, 78.537, 84.715, 60.470
Black; metallic; translucent
In reflected light (air): white; internal reflections frequent, anisotropy weak. R: 30.7% (460 nm),
29.4% (540 nm), 28.2% (580 nm), 26.8% (640 nm)
15.63(100), 3.531(80), 3.263(50), 3.143(90), 2.978(60), 2.911(70), 2.520(60)
IMA No. 2002-054
La(CO3)(OH)
Ancylite group
Orthorhombic: Pmcn
a 4.986, b 8.513, c 7.227 Å
Pale pinkish purple to white; vitreous; diaphaneity not given
No optical data
4.31(100), 3.69(72), 2.93(57), 2.64(30), 2.49(29), 2.33(50), 2.06(48), 1.994(35)
106
IMA Notice
IMA No. 2002-055
Eudialyte group; structure determined
Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2
Trigonal: R3m
a 14.286, c 29.99 Å
Clove brown to yellowish brown; vitreous; transparent
Uniaxial (); ! 1.649, " 1.638
11.49(50), 9.51(90), 3.43(90), 3.19(80), 2.98(100), 2.86(100)
IMA No. 2002-056
(Na,&)12(Na, Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3) H2O
Eudialyte group;
structure determined
Trigonal: R3m
a 14.239, c 30.039 Å
Yellow; vitreous; transparent
Uniaxial (); ! 1.645, " 1.635
6.39(25), 4.30(24), 3.204(38), 3.155(35), 3.019(34), 2.970(83), 2.849(100), 2.134(23)
IMA No. 2002-057
(Na, )12(Ce, Na)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3) H2O
Eudialyte group;
structure determined
Trigonal: R3m
14.248, c 30.076 Å
Cream; vitreous; transparent
Uniaxial (); ! 1.648, " 1.637
4.32(51), 3.975(37), 3.536(33), 3.220(100), 3.166(56), 2.979(95), 2.857(88)
IMA No. 2002-058
Cu4AgPb2Bi9S18
Related to makovickyite; structure determined
Monoclinic: C2=m
a 13.396, b 4.013, c 29.93 Å, 100.07
Grey; metallic; opaque
In reflected light (air): greyish white; internal reflections not observed, anisotropy moderate.
Rmin and Rmax: 42.3–48.5% (460 nm), 41.1–47.1% (540 nm), 40.0–46.0% (580 nm),
39.8–45.2% (640 nm)
3.645(56), 3.486(40), 3.478(100), 3.345(32), 2.964(33), 2.885(29), 2.842(95), 2.282(31)
IMA No. 2002-059
(Ni,Co,Cu)30(As2O7)15
New structure type
Monoclinic: C2
a 33.256, b 8.482 Å, c 14.191 Å, 104.145
Dark violet-red to dark brownish red; vitreous; translucent
In reflected light (air): dark grey; internal reflections orange, anisotropy not obvious. R: 9.63%
(460 nm), 9.33% (540 nm), 9.27% (580 nm), 9.33% (640 nm)
4.23(30), 3.118(100), 3.005(60), 2.567(50), 1.637(50), 1.507(30)
IMA No. 2002-060
Cu2Pd3Se4
Chrisstanleyite series; structure determined
Monoclinic: P21=c
a 5.672, b 9.910, c 6.264 Å, 115.40(2)
Silvery grey; metallic; opaque
IMA Notice
107
In reflected light (air): buff to grey-green; internal reflections not observed, anisotropy
moderate. Rmin and Rmax: 40.4–48.4% (460 nm), 44.2–50.7% (540 nm), 44.7–50.6%
(580 nm), 45.1–50.6% (640 nm)
2.776(22), 2.759(23), 2.676(100), 2.630(64), 2.508(31), 2.269(27)
IMA No. 2002-061
Na(H3O)(UO2)3(SeO3)2O2 4H2O
Related to haynesite; structure determined
Monoclinic: P11m
a 6.9806, b 17.249, c 7.6460 Å, 90.039
Yellow; vitreous; transparent
Biaxial (), 1.597, 1.770, 1.775, 2V(meas.) 20 ; 2V(calc.) 18
8.63(43), 7.67(100), 7.02(33), 3.85(40), 3.107(77), 2.874(53), 1.411(30)
IMA No. 2002-062
New structure type
Cu2HgPb23Sb27S65.5
Monoclinic: C2 or C2=m
a 43.113, b 4.059, c 37.874 Å, 117.35
Black; metallic; opaque
In reflected light (air): white; internal reflections red, anisotropy distinct. R: 39.0% (460 nm),
36.4% (540 nm), 35.2% (580 nm), 33.4% (640 nm)
3.84(31), 3.402(100), 3.369(74), 2.815(70), 2.756(36), 2.251(31), 2.116(31), 1.955(30)
IMA No. 2002-063
(Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5
Ni-dominant analogue of alvanite;
structure determined
Monoclinic: P21=n
a 17.8098, b 5.1228, c 8.8665 Å, 92.141
Colorless to white, light green to light blue; vitreous; diaphaneity not given
Biaxial (), 1.653, 1.680, 1.706, 2V(meas.) 86 , 2V(calc.) 88
8.89(100), 7.83(100), 3.266(50), 1.970(80), 1.904(70), 1.605(50), 1.481(80)
IMA No. 2002-064
Carpholite group
(K,Na,&) (Mn2 þ ,Fe2 þ ,Li)2 (Al,Si)4 Si4 O12(OH)4 (F,OH)4
Orthorhombic: Ccca
a 13.715, b 20.302, c 5.138 Å
White to straw-yellow; silky; diaphaneity not given
Biaxial (), 1.578, 1.592 1.598, 2V(meas.) 57 , 2V(calc.) 66
5.70(100), 3.819(80), 3.43(80), 3.048(90), 2.744(80), 2.613(100), 2.050(80), 1.467(80)
IMA No. 2002-065
(Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl3
Eudialyte group;
structure determined
Trigonal: R3
a 14.239, c 60.733 Å
Pink; vitreous; transparent
Uniaxial (þ), ! 1.597, " 1.601
6.45(33), 5.70(34), 4.32(68), 3.55(39), 3.230(44), 3.049(36), 2.977(100), 2.853(88)
108
IMA Notice
IMA No. 2002-066
Eudialyte group; structure determined
(H3O)8(Na,K,Sr)5Ca6Zr3Si26O66(OH)9Cl
Trigonal: R3
a 14.078, c 31.24 Å
Pink; vitreous; translucent
Uniaxial (þ), ! 1.569, " 1.571
11.43(39), 10.50(44), 7.06(42), 6.63(43), 4.39(100), 3.624(41), 2.987(100), 2.850(79)
IMA No. 2002-067
Na15Ca3Fe3(Na,Zr)3Zr3(Si,Nb)(Si25O73)(OH,H2O)3(Cl,OH)
Eudialyte group;
structure determined
Trigonal: R3
a 14.229, c 30.019 Å
Red; vitreous; transparent
Uniaxial (þ), ! 1.608, " 1.611
11.48(33), 5.72(35), 4.31(66), 4.09(37), 3.209(58), 3.023(40), 2.974(86), 2.853(100)
PROPOSALS FROM PREVIOUS YEARS APPROVED IN 2002
IMA No. 2000-010
ðNa,H3 OÞ15 ðCa,Mn,REEÞ6 Fe3þ 2 Zr3 ð ,ZrÞð ,SiÞSi24 O66 ðO,OHÞ6 Cl nH2 O
Eudialyte
group;
structure
determined
Trigonal: R3m
a 14.167, c 30.081 Å
Yellow; vitreous; translucent
Uniaxial (þ), ! 1.612, " 1.615
6.41(41), 4.30(91), 3.521(57), 3.205(44), 2.963(92), 2.841(100), 2.588(37)
IMA No. 2000-028
Na27K8Ca12Fe3Zr6Si52O144(OH,O)6Cl2
Eudialyte group; structure determined
Trigonal: R3m
a 14.249, c 60.969 Å
Pink; vitreous; transparent
Uniaxial (þ), ! 1.598, " 1.600
6.48(47), 4.34(81), 3.565(41), 3.249(57), 2.987(100), 2.861(73), 2.695(40)
IMA No. 2001-069
NaðNa1:01:5 Li0:51:0 Þ2 ðFe3þ 2 Mg2 LiÞSi8 O22 ðOHÞ2
Amphibole group;
structure determined
Monoclinic: C2=m
a 9.712, b 17.851, c 5.297 Å, 103.63(2)
Bluish black; vitreous; translucent
No optical data could be given
3.392(33), 3.098(37), 2.701(100), 2.576(14), 2.524(100), 2.157(20), 1.646(20), 1.581(15)
IMA Notice
109
IMA No. 2001-070
Related to whitlockite
Ca3(PO4)
Trigonal: R3m
a 5.258, c 18.727 Å
White to yellowish grey; vitreous; diaphaneity not given
Uniaxial (þ), ! 1.706, " 1.701
2.891(80), 2.628(100), 2.214(20), 2.078(12), 2.047(16), 1.945(47), 1.730(25)
Nomenclature Modifications 1998–2002
IMA Code 98-D – Monsmedite discredited ¼ voltaite.
IMA Code 98-E – Arsenobismite discredited ¼ mixture of preisingerite, minor atelestite and
minor beudantite=segnite.
IMA Code 99-A – Platynite discredited ¼ mixture of laitakarite and selenian galena.
IMA Code 99-B – Peprossiite-(Ce) redefined as (Ce,La)(Al3O)2=3B4O10.
IMA Code 00-A – Redefinition (the new name is the second one): vuoriyarvite ¼ vuoriyarvite-K;
kuzmenkoite ¼ kuzmenkoite-Mn; lemmleinite ¼ lemmleinite-K; labuntsovite of Semenov and
Burova (1955) ¼ labuntsovite-Mn; labuntsovite of Milton et al. (1958) ¼ paralabuntsovite-Mg.
IMA Code 00-B – Kurgantaite revalidated.
IMA Code 00-C – Baiyuneboite-(Ce) discredited ¼ cordylite-(Ce).
IMA Code 00-D – Nomenclature of joaquinite group redefined to conform with the Levinson
system. The members of the group are: orthojoaquinite-(La); joaquinite(Ce), orthojoaquinite(Ce), orthojoaquinite-(La), strontiojoaquinite, strontio-orthojoaquinite, bario-orthojoaquinite,
byelorussite-(Ce).
IMA Code 00-E. Destinezite redefined as triclinic Fe2(PO4)(SO4)(OH) 6H2O.
IMA Code 00-F. – Redefinition (the new name is the second one): hellandite ¼ hellandite-(Y);
tadzhikite ¼ tadzhikite-(Ce).
IMA Code 00-G – Neotype approved and magnesium-zippeite redefined as monoclinic Mg
(UO2)2 (SO4) (OH)4 1.5H2O.
IMA Code 01-A – Redefinition (the new name is the second one): h€ogbomite-8H ¼ mag
nesioh€
ogbomite-2N2S; h€
ogbomite-10T ¼ magnesioh€ogbomite-2N3S; h€ogbomite-24R ¼ mag
nesioh€
ogbomite-6N6S; zincoh€
ogbomite-8H ¼ zincoh€ogbomite-2N2S; zincoh€ogbomite-16H ¼
zincoh€
ogbomite-2N6S; nigerite-6T ¼ ferronigerite-2N1S; nigerite-24R ¼ ferronigerite-6N6S;
pengzhizhongite-6T ¼ magnesionigerite-2N1S;
pengzhizhongite-24R ¼ magnesionige-rite6N6S; taaffeite ¼ magnesiotaaffeite-2N0 2S; musgravite ¼ magnesiotaaffeite-6N0 3S; pehrmanite ¼ ferrotaaffeite-6N0 3S.
IMA Code 01-B – Duhamelite discredited ¼ mottramite.
IMA Code 02-A – Tripuhyite is redefined as FeSbO4 and squawcreekite of Ford et al. (1991) is
discredited.
110
IMA Notice
IMA Code 02-B – Arhbarite is redefined as triclinic Cu2Mg(AsO4)(OH)3.
IMA Code 02-D – The mineral name mahlmoodite is corrected in malhmoodite.
Name change approved – ‘‘magnocolumbite’’ is now magnesiocolumbite.
Authors’ addresses: J. D. Grice, Chairman-Emeritus CNMMN, Canadian Museum of Nature,
P.O. Box 3443, Station ‘D’, Ottawa, Ontario, Canada K1P 6P4, e-mail: jgrice@mus-nature.ca;
G. Ferraris, Vice-Chairman CNMMN, Dipartimento di Scienze Mineralogiche e Petrologiche,
Universita di Torino, Via Valperga Caluso 35, I-10125 Torino, Italy, e-mail: ferraris@dsmp.
unito.it
Giovanni Ferraris