There are some good on-line mineral databases about, one of the best is the
one by David Barthelmy on http://web.wt.net/~daba/Mineral/
<http://web.wt.net/~daba/Mineral/>
Extracts enclosed:
Breithauptite Mineral Data ..\sounds/BREITHAU.WAV <../sounds/BREITHAU.WAV>
..\sounds/BREITHAU.WAV <../sounds/BREITHAU.WAV> Pronunciation Guide
Chemical Formula: NiSb
Composition: Molecular Weight = 180.44 gm)
Antimony 67.47 % Sb <../chem/Chem-Sb.html>
Nickel 32.53 % Ni <../chem/Chem-Ni.html>
Locality: COBALT ONTA
Classification
Dana Class: 2.8.11.2 (2) <../dana/II-2.html> Sulfides - Including
Selenides and Tellurides (2.8) <../dana/II-2.html> where Am Bn Xp, with
(m+n):p=1:1 (2.8.11) <../dana/II-2.html> Nickeline Group (Hexagonal:
P63/mmc)
Strunz Class: II/C.20-30 - Sulfides and sulphosalts [Sulfides with metal:
sulfur, selenium and tellurium = 1:1 <>(Nickeline group and related
compounds, Polarite - Cherepanovite series). <../strunz/IIC20.html> ]
Crystallography
Axial Ratios: a:c = 1:1.30534
Cell Dimensions: a = 3.93, c = 5.13, Z = 2; V = 68.62 Den(Calc)= 8.73
Crystal System: Hexagonal - Dihexagonal Dipyramidal
<../crystal/Hexagonal-DihexagonalDipyramidal.html> H-M Symbol (6/m 2/m 2/m)
Space Group: P63/mmc
X Ray Diffraction: By Intensity(I/Io): 2.86(1) 1.97(0.4) 2.05(0.4)
<../X-Ray.html>
Physical Properties
Cleavage: None
Color: copper red or light brown red.
Density: 8.23
Diaphaniety: Opaque
Habits: Tabular - Form dimensions are thin in one direction.,
Massive - Uniformly indistinguishable crystals forming large masses.,
Reniform - "Kidney like" in shape (e.g.. hematite).
Hardness: 3.5-4 - Copper Penny-Flourite
Luminescence: None.
Luster: Metallic
Streak: reddish brown
Gudmundite Mineral Data
General Information
Chemical Formula: FeSbS
Composition: Molecular Weight = 209.66 gm)
Sulfur 15.29 % S <../chem/Chem-S.html>
Antimony 58.07 % Sb <../chem/Chem-Sb.html>
Iron 26.64 % Fe <../chem/Chem-Fe.html>
Name Origin: Named after its locality Gudmundstorp, Sweden.
Classification
Dana Class: 2.12.4.2 (2) <../dana/II-2.html> Sulfides - Including
Selenides and Tellurides (2.12) <../dana/II-2.html> where Am Bn Xp, with
(m+n):p=1:2 (2.12.4) <../dana/II-2.html> Arsenopyrite Group (Monoclinic:
P21/c (Pseudo-orthorhombic))
Strunz Class: II/D.22-30 - Sulfides and sulphosalts [Sulfides with metal:
sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold
<>(Arsenopyrite series). <../strunz/IID22.html> ]
Crystallography
Axial Ratios: a:b:c =1.6868:1:1.1346
Cell Dimensions: a = 10.02, b = 5.94, c = 6.74, Z = 8; beta = 90ø V =
401.16 Den(Calc)= 6.94
Crystal System: Monoclinic - Prismatic
<../crystal/Monoclinic-Prismatic.html> H-M Symbol (2/m) Space Group: P21/n
X Ray Diffraction: By Intensity(I/Io): 2.56(1) 1.912(0.8) 1.41(0.7)
<../X-Ray.html>
Physical Properties
Cleavage: None
Color: silvery white or steel gray.
Density: 6.72
Diaphaniety: Opaque
Habits: Massive - Granular - Common texture observed in granite and
other igneous rock., Crystalline - Fine - Occurs as well-formed fine sized
crystals.,
Hardness: 5.5-6 - Knife Blade-Orthoclase
Luster: Metallic
Streak: grayish black
Other Information
References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd
ed.,1990) ..\tablereferences.html <../tablereferences.html>
See Also: Athena Mineralogy
<http://un2sg4.unige.ch/athena/cgi-bin/minfich?s=GUDMUNDITE>
Frederic Biret
<http://www.dreamtel.fr/mineralogie/g/gudmundite.html>
Google <http://www.google.com/search?q=Gudmundite>
MinMax
<http://www.zampano.com/minmax/minfind.php3?lang=US&name=Gudmundite>
Mineral and Gemstone Kingdom
<http://www.minerals.net/mineral/sulfides/arsenopy/gudmundi.htm>
École des Mines de Paris
<http://cri.ensmp.fr/gm/mineralGUDMUNDITE.html>
Regards
Ralph Bottrill
[log in to unmask] <mailto:[log in to unmask]>
_--_|\
Dept of Mines - Tasmania / \ P.O. Box 56, Rosny Park
Tasmanian Geological Survey \_.--._/ Tasmania 7018, Australia
Aus Tel: 03-6233-8359 v Intl Tel: +61-3-6233-8359
Aus Fax: 03-6233-8338 Here!.../ Intl Fax: +61-3-6233-8338
-----Original Message-----
From: Dr. K. L. Pruseth [SMTP:[log in to unmask]]
Sent: Tuesday, 31 August 1999 22:13
To: [log in to unmask]
Subject: querry on breithauptite and gudmundite
Dear colleagues,
Can anyone please help me out? I need references on the
mineralogical
aspects of Breithauptite and Gudmundite.
Cheers.
_____________________________________
Kamal Lochan Pruseth
Department of Geology and Geophysics
Indian Institute of Technology
Kharagpur - 721 302
INDIA
E-mail: [log in to unmask]
FAX: 91 3222-55303
_____________________________________
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