Heazlewoodite Mineral Data

Heazlewoodite Mineral Data +

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General Heazlewoodite Information

Chemical Formula:

Ni3S2

Composition:

Molecular Weight = 240.20 gm

Nickel 73.30 % Ni

Sulfur 26.70 % S

______

100.00 %

Empirical Formula:

Ni₃S₂

Environment:

In serpentine, probably of hydrothermal origin.

IMA Status:

Valid Species (Pre-IMA) 1896

Locality:

In the USA, from Josephine Co., Oregon. From Heazlewood and Trial Harbour, Tasmania, Australia. Link to MinDat.org Location Data.

Name Origin:

For the locality at Heazlewood, Tasmania, Australia.

Synonym:

ICSD 23114

PDF 44-1418

Heazlewoodite Image

Images:

Heazlewoodite

Comments: Small crystal aggregate of heazlewoodite.
Location: Jeffrey Mine, Asbestos, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Heazlewoodite Crystallography

Axial Ratios:

a:c = 1:1.24351

Cell Dimensions:

a = 5.741, c = 7.139, Z = 3; V = 203.77 Den(Calc)= 5.87

Crystal System:

Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: R 32

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

By Intensity(I/I_o): 1.83(1), 2.89(0.9), 1.66(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
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Fleet M E , American Mineralogist , 62 (1977) p.341-345, The crystal structure of heazlewoodite, and metallic bonds in sulfide minerals

View Additional jPOWD Structure files for Heazlewoodite
[1]

Physical Properties of Heazlewoodite

Cleavage:

None

Color:

Light bronze, Brass yellow.

Density:

5.82

Diaphaniety:

Opaque

Habit:

Disseminated - Occurs in small, distinct particles dispersed in matrix.

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

4 - Fluorite

Luster:

Metallic

Streak:

light bronze

Optical Properties of Heazlewoodite

RL Anisotrophism:

Strong, brown to bluish gray.

RL Color:

Cream, yellowish.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Heazlewoodite in Air**
λ	R	∑ R(λ)
400 nm	34.20
420 nm	40.00
440 nm	45.80
460 nm	49.90
480 nm	52.90
500 nm	55.00
520 nm	56.20
540 nm	57.00
560 nm	57.40
580 nm	57.60
600 nm	58.00
620 nm	58.40
640 nm	59.00
660 nm	59.50
680 nm	60.10
700 nm	60.80

**Calculated Relative Intensity Colors of Heazlewoodite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	180%	190%
R

Calculated Properties of Heazlewoodite

Electron Density:

r_electron=5.67 gm/cc
note: r_{Heazlewoodite}=5.87 gm/cc.

Fermion Index

Fermion Index = 0.01028
Boson Index = 0.98972

Photoelectric:

PE_{Heazlewoodite}= 30.84 barns/electron
U=PE_{Heazlewoodite} x r_electron= 174.82 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Heazlewoodite is Not Radioactive

Heazlewoodite Classification

Dana Class:

2.5.3.1 (2)Sulfides - Including Selenides and Tellurides

(2.5)where Am Bn Xp, with (m+n):p=3:2

(2.5.3)Dana Group

2.5.3.1 Heazlewoodite Ni3S2 R 32 3 2

Strunz Class:

II/B.12-40 II - Sulfides and sulphosalts

II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Sulfides with predominant Nickel, Cobalt, Rhodium and Palladium

II/B.12 - Rhodplumsite - Oregonite series

II/B.12-10 Rhodplumsite Pb2Rh3S2 R 3m 3 2/m

II/B.12-20 Shandite Pb2Ni3S2 R 3m 3 2/m

II/B.12-25 Laflammeite! Pd3Pb2S2 C 2/m 2/m

II/B.12-30 Parkerite Ni3(Bi,Pb)2S2 Pmam 2/m 2/m 2/m

II/B.12-40 Heazlewoodite Ni3S2 R 32 3 2

II/B.12-50 Oregonite Ni2FeAs2 Unk Hex

Other Heazlewoodite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Heazlewoodite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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

Heazlewoodite

Ni3S2
Dana No: 2.5.3.1 Strunz No: II/B.12-40
Locality:

Notes: