Nickelschneebergite Mineral Data

Nickelschneebergite Mineral Data

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General Nickelschneebergite Information

Chemical Formula:

Bi(Ni,Co)2(AsO4)2(OH,H2O)2

Composition:

Molecular Weight = 588.23 gm

Calcium 2.04 % Ca 2.86 % CaO

Iron 1.90 % Fe 2.44 % FeO

Cobalt 6.01 % Co 8.46 % Co₂O₃

Nickel 11.97 % Ni 15.24 % NiO

Bismuth 24.87 % Bi 27.72 % Bi₂O₃

Arsenic 25.47 % As 39.07 % As₂O₅

Hydrogen 0.53 % H 4.75 % H₂O

Oxygen 27.20 % O

______ ______

100.00 % 100.54 % = TOTAL OXIDE

Empirical Formula:

Bi_0.7Ca_0.3Ni_1.2Co_0.6Fe²⁺_0.2(AsO₄)₂(H₂O)_1.1(OH)_0.9

Environment:

Secondary mineral found in the oxidized dump material.Tsumcorite group. Bi-dominant analog of nickel-lotharmeyerite.

IMA Status:

Approved IMA 2003 (Dana # Added)

Locality:

Dump material of the "Am Roten Berg" mining area, about 5 km SW of Schneeberg, Saxony, Germay. Link to MinDat.org Location Data.

Name Origin:

Named as the Ni-dominant analog of schneebergite (Locality).

Synonym:

IMA1999-028

Nickelschneebergite Image

Images:

Nickelschneebergite

Comments: Small crystals of nickelschneebergite.
Location: Roter Berg, Neust?dtel, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Nickelschneebergite Crystallography

Axial Ratios:

a:b:c =1.4491:1:1.2021

Cell Dimensions:

a = 8.995, b = 6.207, c = 7.462, Z = 2; beta = 115° V = 377.58 Den(Calc)= 5.17

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.196(1)(112), 2.98(0.72)(201), 1.702(0.57)(221,404,512.507(0.47)(112), 2.821(0.44)(021), 4.586(0.4)(111),

Forms:

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Crystal Structure:

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Krause W , Bernhardt H J , Effenberger H , Witzke T , European Journal of Mineralogy , 14 (2002) p.115-126, Schneebergite and nickelschneebergite from Schneeberg, Saxony, Germany:, the first Bi-bearing members of the tsumcorite group, Sample: #374, Locality: Schneeberg, Saxony, Germany

Physical Properties of Nickelschneebergite

Color:

Olive green, Brown.

Diaphaniety:

Transparent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Subadamantine

Streak:

pale brown

Optical Properties of Nickelschneebergite

Gladstone-Dale:

CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1844,KC= 0.1871

Optical Data:

Biaxial (+), a=1.94, b=1.95, g=1.97, bire=0.0300

Calculated Properties of Nickelschneebergite

Electron Density:

r_electron=4.71 gm/cc
note: r_{Nickelschneebergite}=5.17 gm/cc.

Fermion Index

Fermion Index = 0.00191
Boson Index = 0.99809

Photoelectric:

PE_{Nickelschneebergite}= 465.12 barns/electron
U=PE_{Nickelschneebergite} x r_electron=2,192.79 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Nickelschneebergite is Not Radioactive

Nickelschneebergite Classification

Dana Class:

40.2.9.7 (40)Hydrated Phosphates, etc

(40.2)where A++ (B++)2 (XO4) · x(H2O)

(40.2.9)Helmutwinklerite Subgroup

40.2.9.1 Tsumcorite PbZnFe(AsO4)2·(H2O) C 2/m 2/m

40.2.9.2 Helmutwinklerite PbZn2(AsO4)2·2(H2O) P1 1

40.2.9.3 Thometzekite Pb(Cu,Zn)2(AsO4)2·2(H2O) C 2/m 2/m

40.2.9.4 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m

40.2.9.5 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2·2(H2O) P1 1

40.2.9.6 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

40.2.9.7 Nickelschneebergite ! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

40.2.9.8 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m

Strunz Class:

VII/C.31-04 VII - Phosphates, Arsenates and Vanadates

VII/C - Water-bearing phosphates without unfamiliar anions, cations of medium and big size: Fe, Mn, Zn, Mg and Ca, (NH4)1+

VII/C.31 - Mawbyite - Gartrellite series

VII/C.31-02 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-04 Nickelschneebergite Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-05 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-06 Cabalzarite! Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2 C 2/m 2/m

VII/C.31-08 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-10 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-20 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono

VII/C.31-30 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-35 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-36 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-40 Thometzekite Pb(Cu,Zn)2(AsO4)2·2(H2O) C 2/m 2/m

VII/C.31-50 Tsumcorite PbZnFe(AsO4)2·(H2O) C 2/m 2/m

VII/C.31-74 Krettnichite! PbMn2(VO4)2(OH)2 C 2/m 2/m

VII/C.31-78 Lukrahnite! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 P1 1

VII/C.31-80 Phosphogartrellite! PbCuFe(PO4)2(OH,H2O)2 P1 1

VII/C.31-90 Gartrellite Pb(Cu,Fe)2(AsO4,SO4)2(CO3,H2O)0.7 P1,P 1 Tri

VII/C.31-92 Zincgartrellite! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 P1 1

VII/C.31-98 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2·2(H2O) P1 1

VII/C.31-100 Helmutwinklerite PbZn2(AsO4)2·2(H2O) P1 1

Other Nickelschneebergite Information

References:

NAME( AmMin, Vol 88, p 253) PHYS. PROP.(AmMin, Vol 88, p 253) OPTIC PROP.(AmMin, Vol 88, p 253)

See Also:

Links to other databases for Nickelschneebergite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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Print or Cut-and-Paste your Nickelschneebergite Specimen Label here :

Nickelschneebergite

Bi(Ni,Co)2(AsO4)2(OH,H2O)2
Dana No: 40.2.9.7 Strunz No: VII/C.31-04
Locality:

Notes: