Dimorphite Mineral Data + 
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- 2.6.1.1 Dimorphite As4S3 P nma 2/m 2/m 2/m
- II/F.02-10 Duranusite As4S Unk Ortho
- II/F.02-20 Dimorphite As4S3 P nma 2/m 2/m 2/m
- II/F.02-30 Realgar AsS P 21/n 2/m
- II/F.02-40 Pararealgar AsS P 21/c 2/m
- II/F.02-50 Alacranite As8S9 P 2/c 2/m
- II/F.02-60 Uzonite As4S5 P 21/m 2/m
- II/F.02-70 Orpiment As2S3 P 21/n 2/m
- II/F.02-80 Laphamite As2(Se,S)3 P 21/n 2/m
- II/F.02-90 Jeromite As(S,Se)2 None
General Dimorphite Information |
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 Chemical Formula: |
As4S3 | ||
| Composition: |
Molecular Weight = 395.88 gm | ||
| Arsenic 75.70 % As | |||
| Sulfur 24.30 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
As4S3 | ||
| Environment: |
Deposited at a fumerolic vent at temperatures of about 70-80 degrees Celcius. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1850 | ||
| Locality: |
From the Solfatara, Campi Flegrei, near Naples, Italy. Link to MinDat.org Location Data. | ||
| Name Origin: |
From the Greek for "two" and "form," in reference to the two forms in which the species was thought to occur. | ||
Dimorphite Image | |||
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Images:
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Dimorphite Crystallography |
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| Axial Ratios: |
a:b:c =1.1353:1:0.6626 | ||
| Cell Dimensions: |
a = 11.24, b = 9.9, c = 6.56, Z = 4; V = 729.97 Den(Calc)= 3.60 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.95(1), 3.92(0.9), 2.13(0.8), | ||
Physical Properties of Dimorphite |
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| Cleavage: |
None | ||
| Color: |
Orange. | ||
| Density: |
3.58 - 3.6, Average = 3.59 | ||
| Diaphaniety: |
Transparent | ||
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
| Hardness: |
1.5 - Between Talc and Gypsum | ||
| Luster: |
Adamantine | ||
| Streak: |
yellow | ||
Optical Properties of Dimorphite |
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| Optical Data: |
Biaxial (+) | ||
Calculated Properties of Dimorphite |
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| Electron Density: |
relectron=3.27 gm/cc |
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| Fermion Index |
Fermion Index = 0.00182 Boson Index = 0.99818 |
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| Photoelectric: |
PEDimorphite = 55.13 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Dimorphite is Not Radioactive |
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Dimorphite Classification |
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| Dana Class: |
2.6.1.1 (2)Sulfides - Including Selenides and Tellurides | ||
| (2.6)where Am Bn Xp, with (m+n):p=4:3 | |||
| (2.6.1)Dana Group | |||
| Strunz Class: |
II/F.02-20 II - Sulfides and sulphosalts | ||
| II/F - Sulfides with nonmetallic properties, Arsenic-Sulfides | |||
| II/F.02 - Duranusite - Jeromite series | |||
Other Dimorphite Information |
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Dimorphite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST Search for Dimorphite using: Visit our Advertisers for Dimorphite : Translate Dimorphite Mineral Data : Ask about Dimorphite here : Print or Cut-and-Paste your Dimorphite Specimen Label here :
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