Sidpietersite
A valid IMA mineral species
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About Sidpietersite
Formula:
Pb2+4(S2O3)O2(OH)2
Colour:
Colourless, beige
Lustre:
Vitreous, Earthy
Hardness:
1 - 2
Specific Gravity:
6.765 (Calculated)
Crystal System:
Triclinic
Name:
Named after Sidney Pieters (1920-2003), of Windhoek, Namibia for his outstanding contributions to Namibian mineralogy.
Unique Identifiers
Mindat ID:
7293
Long-form identifier:
mindat:1:1:7293:5
IMA Classification of Sidpietersite
Classification of Sidpietersite
7.JA.05
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
J : Thiosulfates
A : Thiosulfates of Pb
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
J : Thiosulfates
A : Thiosulfates of Pb
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Sdp | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Sidpietersite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Sidpietersite
Vitreous, Earthy
Transparency:
Transparent, Opaque
Colour:
Colourless, beige
Streak:
Cream-colored, off-white, white
Hardness:
1 - 2 on Mohs scale
Hardness:
VHN25=57 - 67 kg/mm2 - Vickers
Tenacity:
Sectile
Fracture:
Irregular/Uneven
Density:
6.765 g/cm3 (Calculated)
Chemistry of Sidpietersite
Mindat Formula:
Pb2+4(S2O3)O2(OH)2
Element Weights:
Elements listed:
Crystallography of Sidpietersite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.455(2) Å, b = 6.496(2) Å, c = 11.207(4) Å
α = 114. 33(2)°, β = 89.65(2)°, γ = 88.68(2)°
α = 114. 33(2)°, β = 89.65(2)°, γ = 88.68(2)°
Ratio:
a:b:c = 1.148 : 1 : 1.725
Unit Cell V:
495.60 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals are bladed, elongate [011], with a length-to-width ratio of approximately 4:1. Forms are {001} major, and possible very thin {100} and {01_1} minor.
Twinning:
None observed
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005630 | Sidpietersite | Cooper M A, Hawthorne F C (1999) The structure topology of sidpietersite, Pb4(SO3S)O2(OH)2, a novel thiosulfate structure The Canadian Mineralogist 37 1275-1282 |  | 1999 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.13 Å | (100) |
| 3.414 Å | (100) |
| 3.198 Å | (80) |
| 5.93 Å | (50) |
| 2.622 Å | (40) |
| 4.401 Å | (35) |
| 2.889 Å | (35) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 56 : Slag and smelter minerals (see also #51 and #55) |
Type Occurrence of Sidpietersite
General Appearance of Type Material:
Iill-formed, almost warty, nodular masses and crystal groups, as earthy masses and, rarely, as free-standing to radiating bladed-crystal aggregates. Masses, groups and aggregates never exceed 3 mm. Individual subhedral to almost euhedral crystals are bladed, with a length-to-width ratio of approximately 4:1 and not exceeding 0.2 to 0.3 mm in maximum length.
Place of Conservation of Type Material:
The Natural History Museum, London, England, 1998,36.
Canadian Geological Survey, Ottawa, Canada, 68076.
Canadian Geological Survey, Ottawa, Canada, 68076.
Geological Setting of Type Material:
Oxidation zone, secondary after galena. The last mineral to form, on the galena-sphalerite matrix and on the zincite-coated crystals of smithsonite.
Associated Minerals at Type Locality:
Synonyms of Sidpietersite
Other Language Names for Sidpietersite
Common Associates
Associations Based on Photo Data:
| 5 photos of Sidpietersite associated with Galena | PbS |
| 2 photos of Sidpietersite associated with Spertiniite | Cu(OH)2 |
| 2 photos of Sidpietersite associated with Elyite | Pb4Cu(SO4)O2(OH)4 · H2O |
| 2 photos of Sidpietersite associated with Cerussite | PbCO3 |
| 2 photos of Sidpietersite associated with Hydrocerussite | Pb3(CO3)2(OH)2 |
| 2 photos of Sidpietersite associated with Fluorite | CaF2 |
| 1 photo of Sidpietersite associated with Cherokeeite | [Pb2Zn(OH)4](SO4) · H2O |
| 1 photo of Sidpietersite associated with Steverustite | Pb2+5(OH)5[Cu+(S6+O3S2-)3](H2O)2 |
| 1 photo of Sidpietersite associated with Lanarkite | Pb2(SO4)O |
Related Minerals - Strunz-mindat Grouping
| 7.JA. | Hayelasdiite | [Pb4O1.5(OH)2.5]2[Cu+5(S2O3)4(S2O2OH)2(H2O)] · 4H2O |
| 7.JA. | Boojumite | Pb8O4(OH)2(S2O3)3 |
| 7.JA. | Finescreekite | [Pb4(OH)4](S2O3)2 |
| 7.JA. | Boevskite | Pb4(TeO3)2(SO4)(S2O3) |
| 7.JA. | Redmondite | [Pb8O2Zn(OH)6](S2O3)4 |
| 7.JA. | Hydroredmondite | [Pb8O2Zn(OH)6](S2O3)4 · 2H2O |
| 7.JA. | Dinilawiite | [Pb4OAl(OH)6]2(S2O3)2 · (S2O3)(H2O)5 |
| 7.JA. | Sulfatoredmondite | [Pb8O2Zn(OH)6](SO4)4 · 6H2O |
| 7.JA. | Cubothioplumbite | [Pb4(OH)4]Pb(S2O3)3 |
| 7.JA. | Hexathioplumbite | [Pb2+4(OH)4]Pb2+(S6+O3S2-)3 |
| 7.JA.10 | Steverustite | Pb2+5(OH)5[Cu+(S6+O3S2-)3](H2O)2 |
| 7.JA.15 | Fassinaite | Pb2(S2O3)(CO3) |
| 7.JA.20 | Northstarite | Pb6(Te4+O3)5(S6+O3S2-) |
Fluorescence of Sidpietersite
Not fluorescent.
Other Information
Notes:
In dilute HCl, there is only an initial effervescence, after which the material turns to a chalky white color over a few minutes.
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 Sidpietersite
mindat.org URL:
https://www.mindat.org/min-7293.html
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References for Sidpietersite
Reference List:
Roberts, Andrew C., Cooper, Mark A., Hawthorne, Frank C., Criddle, Alan J., Stanley, Christopher J., Key, Charles L., Jambor, John L. (1999) Sidpietersite, Pb2+4(S6+O3S2-)O2(OH)2, a new thiosulfate-bearing mineral species from Tsumeb, Namibia. The Canadian Mineralogist, 37 (5) 1269-1273
Localities for Sidpietersite
Showing 6 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Austria | |
| Program and Abstracts Volume +2 other references |
Germany | |
| EDS- |
| Schimak et al. (02/2021) |
Namibia (TL) | |
| Am. Mineral. 85 (abs.) +2 other references |
UK | |
| Steve Rust collection (analysed) |
USA | |
| A. Kampf PXRD 10/2020 |
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Redmond Mine, Waterville Lake, Haywood County, North Carolina, USA