Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Stephanite

This page is currently not sponsored. Click here to sponsor this page.
Archduke Stephan Franz Victor von Habsburg-Lothringen
Formula:
Ag5SbS4
System:
Orthorhombic
Colour:
Lead gray or black
Lustre:
Metallic
Hardness:
2 - 2½
Name:
Named after the Austrian Mining Director / engineer and life-long mineral collector, Archduke Stephan Franz Victor von Habsburg-Lothringen (1817-1867).
This page provides mineralogical data about Stephanite.

Classification of Stephanite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.GB.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
B : Neso-sulfarsenites, etc. with additional S
3.2.4.1

3 : SULFOSALTS
2 : ø = 4
5.2.11

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
2 : Sulpharsenites etc. of Ag
mindat.org URL:
http://www.mindat.org/min-3764.html
Please feel free to link to this page.

First Recorded Occurrence of Stephanite

Year of Discovery:
1845

Occurrences of Stephanite

Geological Setting:
Late stage mineral in hydrothermal silver deposits.

Physical Properties of Stephanite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Lead gray or black
Streak:
Iron Black
Hardness (Mohs):
2 - 2½
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
[010] Imperfect, [021] Poor
Fracture:
Sub-Conchoidal
Density:
6.26 g/cm3 (Measured)    6.28 g/cm3 (Calculated)

Crystallography of Stephanite

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Cmc21
Cell Parameters:
a = 7.837(3) Å, b = 12.467(6) Å, c = 8.538(2) Å
Ratio:
a:b:c = 0.629 : 1 : 0.685
Unit Cell Volume:
V 834.20 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals short prismatic to tabular
Twinning:
On {110}; less common on {130}{100}{010}.

Crystallographic forms of Stephanite

Crystal Atlas:
Image Loading
Click on an icon to view
Stephanite no.10 - Goldschmidt (1913-1926)
Stephanite no.82 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

Toggle
Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.56 (30)
3.08 (100)
2.89 (60)
2.58 (90)
2.19 (40)
2.13 (50)
1.834 (40)

Optical Data of Stephanite

Type:
Anisotropic
Anisotropism:
Strong
Colour in reflected light:
white-grey
Pleochroism:
Weak
Comments:
white to pink-white

Chemical Properties of Stephanite

Formula:
Ag5SbS4
Essential elements:
All elements listed in formula:
Common Impurities:
As,Cu,Fe

Relationship of Stephanite to other Species

2.GB.05ArgentotennantiteAg6[Cu4(Fe,Zn)2]As4S13
2.GB.05FreibergiteAg6[Cu4Fe2]Sb4S13-x
2.GB.05GirauditeCu6[Cu4(Fe,Zn)2]As4Se13
2.GB.05GoldfielditeCu10Te4S13
2.GB.05HakiteCu6[Cu4Hg2]Sb4Se13
2.GB.05TennantiteCu6[Cu4(Fe,Zn)2]As4S13
2.GB.05TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
2.GB.10SelenostephaniteAg5Sb(Se,S)4
2.GB.15Pearceite[(Ag,Cu)6(As,Sb)2S7][Ag9CuS4]
2.GB.15Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
2.GB.15UM2003-14-S:AgBiFeTeAg16FeBiTe3S8
2.GB.15Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
2.GB.15Cupropearceite[Cu6As2S7][Ag9CuS4]
2.GB.15Cupropolybasite[Cu6Sb2S7][Ag9CuS4]
2.GB.15UM1979-17-S:BiCuFeCu18Fe4BiS16
2.GB.20Galkhaite(Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12
5.2.1SmithiteAgAsS2
5.2.2TrechmanniteAgAsS2
5.2.3ProustiteAg3AsS3
5.2.4XanthoconiteAg3AsS3
5.2.5Pearceite[(Ag,Cu)6(As,Sb)2S7][Ag9CuS4]
5.2.6Pearceite-T2ac
5.2.7ArgentotennantiteAg6[Cu4(Fe,Zn)2]As4S13
5.2.8MiargyriteAgSbS2
5.2.9PyrargyriteAg3SbS3
5.2.10PyrostilpniteAg3SbS3
5.2.12Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
5.2.13BillingsleyiteAg7AsS6
5.2.14Polybasite-Tac
5.2.15FreibergiteAg6[Cu4Fe2]Sb4S13-x
5.2.16AramayoiteAg(Sb,Bi)S2
5.2.17MatilditeAgBiS2
5.2.18SchapbachiteAg0.4Pb0.2Bi0.4S
5.2.19Pavonite(Ag,Cu)(Bi,Pb)3S5
5.2.20ArcubisiteAg6CuBiS4
5.2.21BohdanowicziteAgBiSe2
5.2.22SelenostephaniteAg5Sb(Se,S)4
5.2.23BenleonarditeAg8(Sb,As)Te2S3
5.2.24VolynskiteAgBiTe2

Other Names for Stephanite

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:
Silver ore

References for Stephanite

Reference List:
W. Haidinger: Zweite Klasse: Geogenide. XIV. Ordnung. Glanze. VIII. Melanglanz. Stephanit. In: Handbuch der Bestimmenden Mineralogie. Braumüller und Seidel, Wien 1845, p. 570 [http://rruff.info/uploads/HMB1845_563.pdf]

Murdoch, Joseph (1942), Crystallographic notes, cristobalite, stephanite, natrolite: American Mineralogist: 27: 500-506.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 358-360.

Ribar B., Nowacki W. (1970), Acta Crystallographica (1970), B26, 201.

Leitl, M., Pfitzner, A., Bindi, L. (2009): Preferred ion diffusion pathways and activation energies for Ag in the crystal structure of stephanite, Ag5SbS4. Mineralogical Magazine, 73, 17-26.

Internet Links for Stephanite

Specimens:
The following Stephanite specimens are currently listed for sale on minfind.com.

Localities for Stephanite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: April 20, 2015 02:01:59 Page generated: April 18, 2015 17:08:37