Nickelhexahydrite Mineral Data

[Mineral Galleries] [About Me] [e-Bay Items] [Latest News] [How to Order]
A Diverse Selection of Beautifully Unique Gem & Mineral Specimens
Desert Winds Gems & Minerals • For All Levels of Collectors Worldwide
Aesthetic & Rare Mineral Specimens • Regular Updates

General Nickelhexahydrite Information

Chemical Formula:

(Ni,Mg,Fe++)(SO4)•6(H2O)

Composition:

Molecular Weight = 252.25 gm

Magnesium 2.89 % Mg 4.79 % MgO

Iron 2.21 % Fe 2.85 % FeO

Nickel 13.96 % Ni 17.77 % NiO

Hydrogen 4.80 % H 42.85 % H₂O

Sulfur 12.71 % S 31.74 % SO₃

Oxygen 63.43 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ni_0.6Mg_0.3Fe²⁺_0.1(SO₄)•6(H₂O)

Environment:

Secondary mineral in nickel-bearing sulfide ores.

IMA Status:

Approved IMA 1965

Locality:

Severnaya mine, Norilsk, Siberia, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for nickel in the compostion and relationship to hexahydrite.

Name Pronunciation:

Nickelhexahydrite

Synonym:

ICSD 65018

PDF 33-955

Nickelhexahydrite Image

Images:

Nickelhexahydrite

Comments: Pale greenish crust of ferroan nickelhexahydrite.
Location: Sohland, Bautzen, Oberlausitz, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Nickelhexahydrite Crystallography

Axial Ratios:

a:b:c =1.3723:1:3.3472

Cell Dimensions:

a = 9.84, b = 7.17, c = 24, Z = 8; beta = 97.5° V = 1,678.78 Den(Calc)= 2.00

Crystal System:

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

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

By Intensity(I/I_o): 4.35(1), 2.89(0.9), 3.98(0.9),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Angel R J , Finger L W , Acta Crystallographica, Section C , 44 (1988) p.1869-1873, Polymorphism of nickel sulfate hexahydrate, Locality: synthetic

Physical Properties of Nickelhexahydrite

Cleavage:

{010} Perfect, {100} Good

Color:

Bluish green.

Density:

2.07

Diaphaneity:

Transparent to Translucent

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Nickelhexahydrite

Gladstone-Dale:

CI meas= 0.062 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.03 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2408,KPDmeas= 0.2326,KC= 0.2481
Ncalc = 1.5 - 1.51

Optical Data:

Biaxial (?), a=1.469-1.47, g=1.493-1.494, bire=0.0240

Calculated Properties of Nickelhexahydrite

Electron Density:

Bulk Density (Electron Density)=2.08 gm/cc
note: Specific Gravity of Nickelhexahydrite =2.00 gm/cc.

Fermion Index:

Fermion Index = 0.00620257
Boson Index = 0.99379743

Photoelectric:

PE_{Nickelhexahydrite}= 6.80 barns/electron
U=PE_{Nickelhexahydrite} x rElectron Density= 14.12 barns/cc.

Radioactivity:

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

Nickelhexahydrite Classification

Dana Class:

29.06.08.04 (29)Hydrated Acid and Sulfates

(29.06)where A XO4 · x(H2O)

(29.06.08)Hexahydrite Group (Space Group: C2/c)

29.06.08.01 Hexahydrite MgSO4•6(H2O) A2/a 2/m

29.06.08.02 Bianchite (Zn,Fe)(SO4)•6(H2O) C 2/c 2/m

29.06.08.03 Ferrohexahydrite FeSO4•6(H2O) C 2/c 2/m

29.06.08.04 Nickelhexahydrite (Ni,Mg,Fe)(SO4)•6(H2O) C 2/c 2/m

29.06.08.05 Moorhouseite (Co,Ni,Mn)SO4•6(H2O) C 2/c 2/m

29.06.08.06 Chvaleticeite (Mn,Mg)SO4•6(H2O) C 2/c 2/m

Strunz Class:

07.CB.25 07 - SULFATES (SELENATES, TELLURATES)

07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O

07.CB -With only medium-sized cations

07.CB.25 Bianchite (Zn,Fe)(SO4)•6(H2O) C 2/c 2/m

07.CB.25 Ferrohexahydrite FeSO4•6(H2O) C 2/c 2/m

07.CB.25 Chvaleticeite (Mn,Mg)SO4•6(H2O) C 2/c 2/m

07.CB.25 Hexahydrite MgSO4•6(H2O) A2/a 2/m

07.CB.25 Moorhouseite (Co,Ni,Mn)SO4•6(H2O) C 2/c 2/m

07.CB.25 Nickelhexahydrite (Ni,Mg,Fe)(SO4)•6(H2O) C 2/c 2/m

Other Nickelhexahydrite 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 Nickelhexahydrite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Nickelhexahydrite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Nickelhexahydrite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Nickelhexahydrite Mineral Data :

Ask about Nickelhexahydrite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Nickelhexahydrite

(Ni,Mg,Fe++)(SO4)•6(H2O)
Dana No: 29.06.08.04 Strunz No: 07.CB.25
Locality:

Notes: