UM1970-18-S:As
Invalid as an unnamed mineral
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Formula:
As4S4
Colour:
yellow
Lustre:
Resinous
Specific Gravity:
3.46
Crystal System:
Monoclinic
alpha-As4S4. Stable above 250°C.
Unique Identifiers
Mindat ID:
39034
Long-form identifier:
mindat:1:1:39034:3
GUID
(UUID V4):
(UUID V4):
5ff09df1-4072-4d89-99d7-a65cf16006fb
Classification of UM1970-18-S:As
IMA status notes:
Unnamed (probably invalid)
Approval history:
Unnamed, and probably invalid.
2.FA.15d
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
A : With As, (Sb), S
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
A : With As, (Sb), S
2.8.21.3
2 : SULFIDES
8 : AmXp, with m:p = 1:1
2 : SULFIDES
8 : AmXp, with m:p = 1:1
Physical Properties of UM1970-18-S:As
Chemical Properties of UM1970-18-S:As
Formula:
As4S4
Elements listed:
Crystallography of UM1970-18-S:As
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 9.957 Å, b = 9.335 Å, c = 8.889 Å
β = 102.48°
β = 102.48°
Ratio:
a:b:c = 1.067 : 1 : 0.952
Unit Cell V:
806.698 ų
Z:
16
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.75 Å | (80) |
5.01 Å | (40) |
3.93 Å | (70) |
3.20 Å | (80) |
3.08 Å | (70) |
3.01 Å | (100) |
2.89 Å | (100) |
2.82 Å | (60) |
First Recorded Occurrence of UM1970-18-S:As
Synonyms of UM1970-18-S:As
Related Minerals - Strunz-mindat Grouping
2.FA. | Anorpiment | As2S3 | Tric. 1 : P1 |
2.FA. | Bonazziite | As4S4 | Mon. 2/m : B2/b |
2.FA. | Paradimorphite | As4S3 | Orth. mmm (2/m 2/m 2/m) : Pnma |
2.FA.05 | Duranusite | As4S | Orth. mmm (2/m 2/m 2/m) : Pmna |
2.FA.10 | Dimorphite | As4S3 | Orth. mmm (2/m 2/m 2/m) : Pnma |
2.FA.15b | Pararealgar | As4S4 | Mon. 2/m : P21/b |
2.FA.15a | Realgar | As4S4 | Mon. 2/m |
2.FA.20 | Alacránite | As8S9 | Mon. 2/m : P2/b |
2.FA.25 | Uzonite | As4S5 | Mon. 2/m : P21/m |
2.FA.30 | Laphamite | As2Se3 | Mon. 2/m |
2.FA.30 | Orpiment | As2S3 | Mon. 2/m |
2.FA.35 | Getchellite | AsSbS3 | Mon. 2/m : P21/b |
2.FA.40 | Wakabayashilite | [(As,Sb)6S9][As4S5] | Orth. mm2 : Pna21 |
2.FA.40 | Kalgoorlieite | As2Te3 | Mon. 2/m : B2/m |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for UM1970-18-S:As
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist 55,1338(1970).
Canadian Mineralogist 11,520(1972)
Journal of the Chemical Society, Dalton Transactions (1972), 1347.
Internet Links for UM1970-18-S:As
mindat.org URL:
https://www.mindat.org/min-39034.html
Please feel free to link to this page.
Please feel free to link to this page.
Mineral Dealers:
Localities for UM1970-18-S:As
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.
Chile (FRL) | |
| Clark, A.H. (1970) Alpha-arsenic sulfide, from Mina Alacrán, Pampa Larga, Chile. American Mineralogist, 55, 1338-1344. |