Clinosulphur
A valid IMA mineral species - grandfathered
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About Clinosulphur
Formula:
S8
Like α-sulphur, made of S8 rings.
Colour:
Pale yellow
Specific Gravity:
2.0
Crystal System:
Monoclinic
Member of:
Name:
Originally name sulphur-β for being a polymorph of sulphur. Renamed by the IMA in 2022 to indicate that it is specifically a monoclinic (hence clino) polymorph of sulphur.
Type Locality:
Polymorph of:
Unique Identifiers
Mindat ID:
39990
Long-form identifier:
mindat:1:1:39990:0
GUID
(UUID V4):
(UUID V4):
7df0b28a-4a3f-4b37-a41a-a94e4729529f
Classification of Clinosulphur
Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Renamed by the IMA
First published:
1912
1.CC.
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
C : Metalloids and Nonmetals
C : Sulfur-selenium-iodine
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
C : Metalloids and Nonmetals
C : Sulfur-selenium-iodine
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 |
---|---|---|
S-β | 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 Clinosulphur
Transparency:
Transparent
Colour:
Pale yellow
Density:
2.0 g/cm3 (Measured)
Chemical Properties of Clinosulphur
Formula:
S8
Like α-sulphur, made of S8 rings.
Like α-sulphur, made of S8 rings.
IMA Formula:
S
Elements listed:
Crystallography of Clinosulphur
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 10.778 Å, b = 10.844 Å, c = 10.924 Å
β = 95.80°
β = 95.80°
Ratio:
a:b:c = 0.994 : 1 : 1.007
Unit Cell V:
1,270.22 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.609 Å | (moderately strong) |
4.530 Å | (moderately strong) |
3.803 Å | (moderately strong) |
3.723 Å | (very strong) |
3.545 Å | (very strong) |
3.455 Å | (strong |
broad) Å | ( |
3.359 Å | (moderately strong) |
3.168 Å | (moderately strong) |
Comments:
Synthetic. Data from Taylor and Rummery (1978).
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
45a : [Sulfates, arsenates, selenates, antimonates] | |
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
50 : Coal and/or oil shale minerals | <0.36 |
Stage 10b: Anthropogenic minerals | <10 Ka |
54 : Coal and other mine fire minerals (see also #51 and #56) |
Geological Setting:
Commonly found as pale yellow needles around low-temperature fumaroles with gas temperatures above 96°C
Type Occurrence of Clinosulphur
Place of Conservation of Type Material:
No designated type material.
Geological Setting of Type Material:
Fumaroles in the crater of a dormant volcano.
Synonyms of Clinosulphur
Relationship of Clinosulphur to other Species
Member of:
Other Members of this group:
Rosickýite | S | Mon. 2/m : P2/b |
Sulphur | S8 | Orth. mmm (2/m 2/m 2/m) : Fddd |
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Clinosulphur associated with Opal | SiO2 · nH2O |
3 photos of Clinosulphur associated with Cristobalite | SiO2 |
Related Minerals - Strunz-mindat Grouping
1.CC.05 | Rosickýite | S | Mon. 2/m : P2/b |
1.CC.05 | Sulphur | S8 | Orth. mmm (2/m 2/m 2/m) : Fddd |
1.CC.10 | Selenium | Se | Trig. 3 2 : P31 2 1 |
1.CC.10 | Tellurium | Te | Trig. 3 2 : P31 2 1 |
Other Information
Magnetism:
Non-Magnetic
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 Clinosulphur
mindat.org URL:
https://www.mindat.org/min-39990.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
References for Clinosulphur
Reference List:
Localities for Clinosulphur
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).
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.
All localities listed without proper references should be considered as questionable.
Czech Republic | |
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Hungary | |
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Italy (TL) | |
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Japan | |
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USA | |
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Main Crater, Iodake, Satsuma-Ioujima, Mishima village, Kagoshima District, Kagoshima Prefecture, Japan