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Suredaite
A valid IMA mineral species
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About Suredaite
Ricardo J. Sureda
Formula:
PbSnS3
Colour:
Grayish black
Lustre:
Metallic
Hardness:
2½ - 3
Specific Gravity:
5.54 - 5.88
Crystal System:
Orthorhombic
Name:
The name honors Ricardo JosĂŠ Sureda Leston (25 August 1946, Rio Gallegos, Santa Cruz, Argentina - 3 November 2020, Salta, Salta, Argentina), head of the Department of Mineralogy and Economic Geology, University of Salta, Argentina. He coauthored descriptions of brodtkorbite, catalanoite, jaguĂŠite, and coiraite.
This page provides mineralogical data about Suredaite.
Unique Identifiers
Mindat ID:
7322
Long-form identifier:
mindat:1:1:7322:2
IMA Classification of Suredaite
Approved
IMA Formula:
Pb2+Sn4+S2-3
Approval year:
1997
First published:
2000
Type description reference:
Paar, Werner H., Miletich, Ronald, Topa, Dan, Criddle, Alan J., De Brodtkorb, Milka K., Amthauer, Georg, Tippelt, Gerold (2000) Suredaite, PbSnS3, a new mineral species, from the Pirquitas Ag-Sn deposit, NW-Argentina: mineralogy and crystal structure. American Mineralogist, 85 (7) 1066-1075 doi:10.2138/am-2000-0723
Classification of Suredaite
2.DB.10
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
B : M:S = 2:3
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
B : M:S = 2:3
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Su | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Su | 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 Suredaite
Metallic
Transparency:
Opaque
Colour:
Grayish black
Streak:
Dark gray
Hardness:
2½ - 3 on Mohs scale
Hardness:
VHN50=19.6 kg/mm2 - Vickers
Comment:
measured on {h01}
Tenacity:
Brittle
Cleavage:
Perfect
Parallel {001}, {101}, and {100}.
Parallel {001}, {101}, and {100}.
Density:
5.54 - 5.88 g/cm3 (Measured) 5.615 g/cm3 (Calculated)
Optical Data of Suredaite
Anisotropism:
weak - metallic blue to mauve to brown
Bireflectance:
None
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 460nm | 34.3% | 36.3% |
| 540nm | 31.5% | 33.1% |
| 580nm | 30.3% | 31.7% |
| 640nm | 29.0% | 30.2% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 36.3%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White
Pleochroism:
Non-pleochroic
Comments:
Between crossed polars its characteristic rotation tints are metallic blue to mauve to brown.
Chemistry of Suredaite
Mindat Formula:
PbSnS3
Element Weights:
| Element | % weight |
|---|---|
Oploca Vein System, San Miguel Open pit, Pirquitas Mine, Mina Pirquitas, Rinconada Department, Jujuy Province, Argentina