Donate now to keep mindat.org alive!Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
The most common minerals on earthMineral PhotographyThe Elements and their Minerals
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

UM1970-18-S:As

This page is currently not sponsored. Click here to sponsor this page.
Formula:
As4S4
Colour:
yellow
Lustre:
Resinous
Specific Gravity:
3.46
Crystal System:
Monoclinic
alpha-As4S4. Stable above 250°C.


Hide all sections | Show all sections

Classification of UM1970-18-S:AsHide

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
2.8.21.3

2 : SULFIDES
8 : AmXp, with m:p = 1:1

Physical Properties of UM1970-18-S:AsHide

Resinous
Colour:
yellow
Density:
3.46 g/cm3 (Measured)    3.46 g/cm3 (Calculated)

Chemical Properties of UM1970-18-S:AsHide

Formula:
As4S4

Crystallography of UM1970-18-S:AsHide

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°
Ratio:
a:b:c = 1.067 : 1 : 0.952
Unit Cell V:
806.698 ų
Z:
16

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.75 (80)
5.01 (40)
3.93 (70)
3.20 (80)
3.08 (70)
3.01 (100)
2.89 (100)
2.82 (60)
(

First Recorded Occurrence of UM1970-18-S:AsHide

Synonyms of UM1970-18-S:AsHide

Other Language Names for UM1970-18-S:AsHide

Related Minerals - Nickel-Strunz GroupingHide

2.FA.AnorpimentAs2S3Tric. 1 : P1
2.FA.BonazziiteAs4S4Mon. 2/m : B2/b
2.FA.05DuranusiteAs4SOrth. mmm (2/m 2/m 2/m) : Pmna
2.FA.10DimorphiteAs4S3Orth. mmm (2/m 2/m 2/m) : Pnma
2.FA.15bPararealgarAs4S4Mon. 2/m : P21/b
2.FA.15aRealgarAs4S4Mon. 2/m
2.FA.20AlacrániteAs8S9Mon. 2/m : P2/b
2.FA.25UzoniteAs4S5Mon.
2.FA.30LaphamiteAs2(Se,S)3Mon. 2/m
2.FA.30OrpimentAs2S3Mon. 2/m
2.FA.35GetchelliteAsSbS3Mon. 2/m : P21/b
2.FA.40Wakabayashilite[(As,Sb)6S9][As4S5]Orth. mm2 : Pna21

Related Minerals - Dana Grouping (8th Ed.)Hide

2.8.21.1Platynite
2.8.21.1RealgarAs4S4Mon. 2/m
2.8.21.2PararealgarAs4S4Mon. 2/m : P21/b
2.8.21.4UM1970-19-S:AsAs4S4Mon. 2/m : B2/b

Other InformationHide

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:AsHide

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:AsHide

Localities for UM1970-18-S:AsHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Chile (FRL)
 
  • Atacama Region
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga district
          • Alacrán
Amer. Min. 55,1338(1970)
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2017, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 20, 2017 05:56:09 Page generated: October 18, 2017 21:54:12
Go to top of page