Nickelalumite Mineral Data (original) (raw)

General Nickelalumite Information

Help on Chemical Formula: Chemical Formula:

(Ni,Cu)Al4[(SO4),(NO3)2](OH)12•3(H2O)

Help on Composition: Composition:

Molecular Weight = 632.31 gm

Aluminum 17.07 % Al 32.25 % Al2O3

Copper 3.01 % Cu 3.77 % CuO

Nickel 6.50 % Ni 8.27 % NiO

Hydrogen 2.87 % H 25.64 % H2O

Sulfur 7.61 % S 18.99 % SO3

Nitrogen 2.22 % N 8.54 % N2O5

Oxygen 60.73 % O

______ ______

100.00 % 97.47 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ni0.7Cu0.3Al4(SO4)1.5(NO3)(OH)12•3(H2O)

Help on Environment: Environment:

Crusts on gypsum crystals.

Help on IMA Status: IMA Status:

Not Approved IMA 1980

Help on Locality: Locality:

Mbobo Mkulu cave, eastern Transvaal, South Africa. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named in allusion to its composition.

Help on Name Pronunciation: Name Pronunciation:

Nickelalumite + Pronunciation Say NICKELALUMITE

Nickelalumite Image

Click Here for Larger Nickelalumite Image in a New Browser Window Images:

Click Here for Larger Nickelalumite Image Nickelalumite Comments: Aggregates of blue neckelaluminite spherulites on matrix. Location: Jomde mine, San Juan County, Utah, USA.Scale: See Image. © Rruff Database

Nickelalumite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.1484:1:1.9383

Help on Cell Dimensions: Cell Dimensions:

a = 10.175, b = 8.86, c = 17.174, Z = 4; beta = 95.95° V = 1,539.90 Den(Calc)= 2.73

Help on Crystal System: Crystal System:

Monoclinic - SphenoidalH-M Symbol (2) Space Group: P 21

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 8.543(1), 1.997(0.2), 7.877(0.2),

Click Here for Large Nickelalumite Structure Window Crystal Structure:

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Help on Above

| | Uvarova Y A , Sokolova E , Hawthorne F C , Karpenko V V , Agakhanov A A , Pautov L A , The Canadian Mineralogist , 43 (2005) p.1511-1519, The crystal chemistry of the nickelalumite -group minerals | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Nickelalumite

Help on Cleavage: Cleavage:

{???} Perfect

Help on Color: Color:

Sky blue.

Help on Density: Density:

2.24

Help on Habit: Habit:

Encrustations - Forms crust-like aggregates on matrix.

Help on Habit: Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Help on Hardness: Hardness:

2.5 - Finger Nail

Help on Streak: Streak:

bluish white

Optical Properties of Nickelalumite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.047 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.141 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1969,KPDmeas= 0.24,KC= 0.2292
Ncalc = 1.51 - 1.63

Help on Optical Data: Optical Data:

Biaxial (?), a=1.532, g=1.543, bire=0.0110

Calculated Properties of Nickelalumite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.28 gm/cc
note: Specific Gravity of Nickelalumite =2.24 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PENickelalumite = 4.81 barns/electron
U=PENickelalumite x rElectron Density= 10.94 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nickelalumite is Not Radioactive

Nickelalumite Classification

Help on Dana Class: Dana Class:

31.03.01.02 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.03)where (A+ B++)5 (XO4) Zq�x(H2O)

(31.03.01)Dana Group

31.03.01.01 Chalcoalumite CuAl4(SO4)(OH)12•3(H2O) P 21 2

31.03.01.02 Nickelalumite* (Ni,Cu)Al4[(SO4),(NO3)2](OH)12•3(H2O) P 21 2

31.03.01.03 Kyrgyzstanite! ZnAl4(SO4)(OH)12•3(H2O) P 21/n 2/m

Help on Strunz Class: Strunz Class:

07.DD.75 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DD -With only medium-sized cations; sheets of edge-sharing octahedra

07.DD.75 Chalcoalumite CuAl4(SO4)(OH)12•3(H2O) P 21 2

07.DD.75 Nickelalumite* (Ni,Cu)Al4[(SO4),(NO3)2](OH)12•3(H2O) P 21 2

Other Nickelalumite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Nickelalumite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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

Nickelalumite

(Ni,Cu)Al4[(SO4),(NO3)2](OH)12•3(H2O)
Dana No: 31.03.01.02 Strunz No: 07.DD.75
Locality:

Notes: