Classification of Putzite |
| IMA status: | Approved 2002 |
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| Strunz 8th edition ID: | 2/B.08-05
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| Nickel-Strunz 10th (pending) edition ID: | 2.BA.70
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.) B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1) A : With Cu, Ag, Au |
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| mindat.org URL: | http://www.mindat.org/min-26707.html Please feel free to link to this page. |
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Type Occurrence of Putzite |
| Type Locality: | Capillitas Mine, Andalgalá Department, Catamarca, Argentina |
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| General Appearance of Type Material: | Putzite occurs as aggregates of anhedral grains, up to 3 × 1 mm, embedded in a matrix of predominantly chalcocite with relics of bornite. |
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| Year of Discovery: | 2002 |
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| Geological Setting of type material: | Capillitas diatreme located within the Farallón Negro volcanic complex. |
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| Associated Minerals at type locality: | |
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Physical Properties of Putzite |
| Lustre: | Metallic |
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| Diaphaneity (Transparency): | Opaque |
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| Colour: | Iron-black with a weak violet tint |
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| Streak: | Black |
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| Hardness (Mohs): | 3 - 3½ |
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| Hardness (Vickers): | VHN100=183 - 201 (50 s test time) |
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| Tenacity: | Brittle |
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| Cleavage: | Distinct/Good Distinct in polished sections |
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| Fracture: | Irregular/Uneven, Splintery, Sub-Conchoidal |
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| Density (calculated): | 5.788 g/cm3 |
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Crystallography of Putzite |
| Crystal System: | Isometric |
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| Class (H-M): | 4 3m - Hextetrahedral |
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| Space Group: | F4 3m |
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| Cell Parameters: | a = 10.201Å, b = 10.201Å, c = 10.201Å
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| Ratio: | a:b:c = 1 : 1 : 1 |
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| Unit Cell Volume: | V 1,061.52 ų (Calculated from Unit Cell) |
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| Z: | 4 |
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| Morphology: | Aggregates of anhedral grains, up to 3 X 1 mm. |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 5.896 | | (30) | | 3.074 | | (60) | | 2.943 | | (100) | | 2.083 | | (30) | | 1.962 | | (50) | | 1.805 | | (70) | | 1.725 | | (25) |
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| Comments: | The crystal structure of putzite was solved by direct methods to an R index of 5.97% for 259 observed reflections measured with MoKα X-radiation. Close metal–metal contacts indicate Cu,Ag disorder. The structure description is based on regular polyhedra such as GeS4, SCu6, SAg12 and SCu12, instead of the conventional discussion of various two-, three-, or four-fold coordinations around (disordered) Ag and Cu. |
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Optical Data of Putzite |
| Type: | Isotropic |
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| Colour in reflected light: | Pale rose to pale violet |
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| Internal Reflections: | None |
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Chemical Properties of Putzite |
| Formula: | |
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| Essential elements: | Ag, Cu, Ge, S |
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| All elements listed in formula: | Ag, Cu, Ge, S |
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| Analytical Data: | The chemical composition, which was determined with an electron microprobe, shows weak variation from grain to grain. The average composition of one sample (four grains, 29 analyses) is given here.
Cu 33.04
Ag 39.33
Ge 7.79
S 20.55
total 100.71 wt.% |
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| Empirical Formula: | |
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Relationship of Putzite to other Species |
| Member of: | Argyrodite Group |
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Other Members of Group:
- + | |
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Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Putzite |
| Synonyms: | |
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| Other Languages: | |
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Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Putzite |
Reference List:
- + | Paar, W.H., Roberts, A.C., Berlepsch, P., Armbruster, T., Topa, D., Zagler, G. (2004): Putzite, (Cu4.7Ag3.3)8GeS6, a new mineral species from Capillitas, Catamarca, Argentina: description and crystal structure. Canadian Mineralogist 42, 1757-1769. |
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Internet Links for Putzite |
| Search Engines: |
Look for Putzite on Google
Look for Putzite images on Google |
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| External Links: | Look for Putzite on WebmineralLook for Putzite on Athena MineralogyLook for Putzite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure Database |
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| Mineral Dealers: | SpiriferMinerals.com - high quality low pricesFine Minerals from Weinrich Minerals, Inc.Top quality minerals from Kristalle of CaliforniaFabre Minerals - search for Putzite specimensFind Putzite on www.crystalclassics.co.ukSearch for - Putzite - on e-Rocks Mineral Sales & AuctionsBuy minerals from YourMineralCollectionWilensky Fine Mineralsrare and unusual minerals mainly crystallizedBuy RARE Minerals from Rocks of AfricaBuy fine minerals and gemstones from Pala InternationalMineral Classics - Worldwide Collector Quality Minerals and Gems |
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| Jobs: | Mining & Geology Jobs |
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Localities for Putzite |
The 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.
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