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Pauflerite
A valid IMA mineral species
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About Pauflerite
Formula:
(V4+O)SO4
Colour:
Light green
Lustre:
Vitreous
Hardness:
3 - 4
Specific Gravity:
3.36
Crystal System:
Orthorhombic
Name:
Named after Dr. Peter Paufler, (b. 18 February 1940, Dresden, Germany) Professor of Crystallography at TU Dresden, Germany, in recognition of his important contributions to physical and structural crystallography and mineralogy.
A mineral of high-temperature volcanic fumaroles.
Several modifications of VO(SO4) are known in inorganic chemistry. Pauflerite is beta-VO(SO4).
Several modifications of VO(SO4) are known in inorganic chemistry. Pauflerite is beta-VO(SO4).
Unique Identifiers
Mindat ID:
27443
Long-form identifier:
mindat:1:1:27443:4
Similar Names
| Puflerite | A synonym of Stilbite Subgroup |
IMA Classification of Pauflerite
Approved
IMA Formula:
V4+O(S6+O4)
Approval year:
2005
First published:
2007
Type description reference:
Classification of Pauflerite
7.BB.55
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
B : With medium-sized cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
B : With medium-sized cations
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 |
|---|---|---|
| Pfl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Pauflerite
Vitreous
Transparency:
Transparent
Colour:
Light green
Streak:
White
Hardness:
3 - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
without visible cleavage
without visible cleavage
Density:
3.36(4) g/cm3 (Measured)
Optical Data of Pauflerite
Type:
Biaxial (+)
RI values:
nα = 1.731(4) nβ = 1.778(2) nγ = 1.845(4)
2V:
Measured: 90° , Calculated: 83°
Max. Birefringence:
δ = 0.114
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Comments:
Clear in green tones: X light green, Y bluish green, Z light green-blue.
Chemistry of Pauflerite
Mindat Formula:
(V4+O)SO4
Elements listed:
Crystallography of Pauflerite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnma
Cell Parameters:
a = 7.389 Å, b = 6.274 Å, c = 7.079 Å
Ratio:
a:b:c = 1.178 : 1 : 1.128
Unit Cell V:
328.17 ų (Calculated from Unit Cell)
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) |
|---|---|---|---|---|---|---|---|
| 0006150 | Pauflerite | Krivovichev S V, Vergasova L P, Britvin S N, Filatov S K, Kahlenberg V, Ananiev V V (2007) Pauflerite, B-VO(SO4), a new mineral species from the Tolbachik volcano, Kamchatka Peninsula, Russia The Canadian Mineralogist 45 921-927 |  | 2007 | Great Fissure Tolbachik eruption, Kamchatka Peninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.11 Å | (27) |
| 4.70 Å | (18) |
| 3.54 Å | (31) |
| 3.28 Å | (100) |
| 3.14 Å | (73) |
| 2.845 Å | (18) |
| 2.237 Å | (17) |
| 2.209 Å | (17) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 36 : Carbonatites, kimberlites, and related igneous rocks | |
| Stage 7: Great Oxidation Event | <2.4 |
| 45a : [Sulfates, arsenates, selenates, antimonates] | |
| 45b : [Other oxidized fumarolic minerals] |
Type Occurrence of Pauflerite
General Appearance of Type Material:
Light green prismatic crystals up to 0.1 mm in length
Place of Conservation of Type Material:
Mineralogical Museum, Department of Mineralogy, St. Petersburg University, St. Petersburg, Russia.
Geological Setting of Type Material:
high temperature fumaroles
Associated Minerals at Type Locality:
First scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia