Smolianinovite Mineral Data

General Smolianinovite Information

Chemical Formula:

(Co,Ni,Mg,Ca)3(Fe+++,Al)2(AsO4)4•11(H2O)

Composition:

Molecular Weight = 1,081.49 gm

Calcium 2.59 % Ca 3.63 % CaO

Magnesium 2.02 % Mg 3.35 % MgO

Aluminum 0.75 % Al 1.41 % Al₂O₃

Iron 8.78 % Fe 12.55 % Fe₂O₃

Cobalt 6.54 % Co 8.31 % CoO

Nickel 5.97 % Ni 7.60 % NiO

Arsenic 28.40 % As 43.57 % As₂O₅

Hydrogen 2.19 % H 19.57 % H₂O

Oxygen 42.75 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Co_1.2Ni_1.1Mg_0.9Ca_0.7Fe³⁺_1.7Al_0.3(AsO₄)_4.1(OH)_1.5ï¿½11(H₂O)

Environment:

An oxidation product of Ni-Co arsenides.

IMA Status:

Valid Species (Pre-IMA) 1956

Locality:

Bou Azzer, Morocco. Link to MinDat.org Location Data.

Name Origin:

Named for Nikolai A. Smoljaninov (1885-1957), Mineralogist, Moscow Univerisity, Russia.

Name Pronunciation:

Smolianinovite + Pronunciation

Smolianinovite Image

Images:

Smolianinovite

Comments: Tan to brown smolianinovite pseudomorphs after cobaltite crystals, with erythrite and tarnished cobaltite.
Location: Mount Cobalt, Cloncurry, Queensland, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Smolianinovite Crystallography

Axial Ratios:

a:b:c =0.546:1:1.8686

Cell Dimensions:

a = 6.4, b = 11.72, c = 21.9, Z = 2; V = 1,642.68 Den(Calc)= 2.19

Crystal System:

Orthorhombic Space Group: Unk

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

By Intensity(I/I_o): 10.87(1), 3.16(0.7), 2.88(0.6),

Physical Properties of Smolianinovite

Cleavage:

{???} Distinct

Color:

Yellow, Yellow brown.

Density:

2.43 - 2.49, Average = 2.46

Diaphaneity:

Transparent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

2 - Gypsum

Luster:

Silky

Optical Properties of Smolianinovite

Gladstone-Dale:

CI meas= -0.144 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.285 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2854,KPDmeas= 0.2541,KC= 0.2222
Ncalc = 1.49 - 1.55

Optical Data:

Biaxial (+), b=1.625

Calculated Properties of Smolianinovite

Electron Density:

Bulk Density (Electron Density)=2.39 gm/cc
note: Specific Gravity of Smolianinovite =2.46 gm/cc.

Fermion Index:

Fermion Index = 0.0048017665
Boson Index = 0.9951982335

Photoelectric:

PE_{Smolianinovite}= 26.57 barns/electron
U=PE_{Smolianinovite} x rElectron Density= 63.60 barns/cc.

Radioactivity:

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

Smolianinovite Classification

Dana Class:

40.05.08.01 (40)Hydrated Phosphates, etc

(40.05)with miscellaneous formulae

(40.05.08)Smolianinovite Group

40.05.08.01 Smolianinovite (Co,Ni,Mg,Ca)3(Fe,Al)2(AsO4)4•11(H2O) Unk Ortho

40.05.08.02 Fahleite Zn5CaFe2(AsO4)6•14(H2O) Unk Ortho

40.05.08.03 Barahonaite-(Fe)! (Ca,Cu,Na,Fe,Al)12Fe2(AsO4)8(OH,Cl)x•nH2O P 2/a or Pa Mono

40.05.08.04 Barahonaite-(Al)! (Ca,Cu,Na,Fe,Al)12Al2(AsO4)8(OH,Cl)x•nH2O P 2/a or Pa Mono

Strunz Class:

08.CH.55 08 - PHOSPHATES, ARSENATES, VANADATES

08.C - Phosphates without Additional Anions, with H2O

08.CH -With large and medium-sized cations, RO4:H2O < 1:1

08.CH.55 Fahleite Zn5CaFe2(AsO4)6•14(H2O) Unk Ortho

08.CH.55 Smolianinovite (Co,Ni,Mg,Ca)3(Fe,Al)2(AsO4)4•11(H2O) Unk Ortho

08.CH.55 IMA2008-048! Zn6(PO4)4•7H2O P1 1

Other Smolianinovite Information

References:

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

See Also:

Links to other databases for Smolianinovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - Scandinavian mineral gallery

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Smolianinovite

(Co,Ni,Mg,Ca)3(Fe+++,Al)2(AsO4)4•11(H2O)
Dana No: 40.05.08.01 Strunz No: 08.CH.55
Locality:

Notes:

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