Padĕraite (original) (raw)
A valid IMA mineral species
Formula:
Cu7[(Cu,Ag)0.33Pb1.33Bi11.33]S22
Cook & Ciobanu (2003) suggest the formula Cu7(Ag0.4Pb1.2)∑1.6Bi11.4S22
Specific Gravity:
6.80 (Calculated)
Crystal System:
Monoclinic
Name:
Named by W.G. Mumme and L. Žák in 1985 in honor of Karel Padĕra (5 May, 1923 - 2010), Czech mineralogist, Charles University, Prague who first worked on the mineral.
This page provides mineralogical data about Padĕraite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:3059:1
2216a33e-904d-4dec-bd68-647958d9a218
IMA Classification of PadĕraiteHide
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IMA Formula:
Cu7[(Cu,Ag)0.33Pb1.33Bi11.33]S22
Type description reference:
Classification of PadĕraiteHide
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2.JA.10e
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
A : Galena derivatives with little or no Pb
3.8.4.2
3 : SULFOSALTS
8 : 1 < ø < 2
5.7.45
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Pdĕ | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Pad | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of PadĕraiteHide
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Comment:
Steel-gray on fresh fractures, turning brown to black;
Fracture:
Irregular/Uneven
Density:
6.80(10) g/cm3 (Calculated)
Optical Data of PadĕraiteHide
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Colour in reflected light:
creamy white
Chemistry of PadĕraiteHide
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Mindat Formula:
Cu7[(Cu,Ag)0.33Pb1.33Bi11.33]S22
Cook & Ciobanu (2003) suggest the formula Cu7(Ag0.4Pb1.2)∑1.6Bi11.4S22
Crystallography of PadĕraiteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 28.423(3) Å, b = 3.9426(4) Å, c = 17.573(2) Å
β = 105.525(2)°
Ratio:
a:b:c = 7.209 : 1 : 4.457
Unit Cell V:
1,897.39 ų (Calculated from Unit Cell)
Morphology:
Platy fragments, in granular to parallel fibrous aggregates, to several mm.
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.06 Å | (100) |
| 3.63 Å | (74) |
| 3.21 Å | (61) |
| 2.85 Å | (43) |
| 2.66 Å | (38) |
| 3.18 Å | (34) |
| 2.19 Å | (30) |
Comments:
Calculated from structure.
Geological EnvironmentHide
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Type Occurrence of PadĕraiteHide
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Place of Conservation of Type Material:
Charles University, Prague, Czech Republic, 11329; National Museum of Natural History, Washington, D.C., USA, 164244.
Associated Minerals at Type Locality:
Reference:
Mumme, W.G., Žák, L. (1985) Padĕraite, Cu5.9Ag1.3Pb1.6Bi11.2S22, a new mineral of the cuprobismutite-hodrushite group. Neues Jahrbuch für Mineralogie, Monatshefte: 1985(12): 557-567.
Other Language Names for PadĕraiteHide
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Simplified Chinese:帕德矿
Traditional Chinese:帕德礦
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for PadĕraiteHide
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References for PadĕraiteHide
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Reference List:
Localities for PadĕraiteHide
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This 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.
Locality ListHide
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 
- Good crystals or important locality for species. 
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.