Pearceite R050611

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Record 2 of 4  

Name: Pearceite
RRUFF ID: R050611
Ideal Chemistry: [Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]
Locality: Imiter mine, Morocco
Source: Marcus Origlieri
Owner: RRUFF
Description: Dark red flakes. The cell parameters indicate that this is pearceite-M2a2b2c
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Polybasite (6) ]
Quick search: [ All Pearceite samples (4) ]
CHEMISTRY 
RRUFF ID: R050611.2
Sample Description: Microprobe Fragment
Measured Chemistry: Cu1.00(Ag5.83Cu0.17)Σ=6.00Ag10.78As1.99S11
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 785nm @ 100% of 500 mW
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INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050611.9
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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POWDER DIFFRACTION 
RRUFF ID: R050611.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 25.877(2)Å    b: 15.005(1)Å    c: 23.938(2)Å
alpha: 90°    beta: 90.103(6)°    gamma: 90°   Volume: 9295(1)Å3    Crystal System: monoclinic
  File Type Information Close
Calculated diffraction file.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Pearceite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Rose H (1829) Ueber die in der natur corkommenden nicht oxydirten verbindungen des antimons und des arseniks, Annalen der Physik und Chemie, 1829, 573-592   [view file]

Penfield S L (1896) On pearceite, a sulpharsenite of silver and on the crystallization of polybasite, American Journal of Science, 152, 17-29   [view file]

Frondel C (1963) Isodimorphism of the polybasite and pearceite series, American Mineralogist, 48, 565-572   [view file]

Fleischer M (1965) New mineral names, American Mineralogist, 50, 1504-1508   [view file]

Hall H T (1967) The pearceite and polybasite series, American Mineralogist, 52, 1311-1321   [view file]

Edenharter A, Koto K, Nowacki W (1971) Über pearceit, polybasit und binnit, Neues Jahrbuch für Mineralogie, Monatshefte, 1971, 337-341

Bailey S W (1977) Report of the I.M.A-I.U.Cr. Joint Committee on Nomenclature, American Mineralogist, 62, 411-415   [view file]

Bindi L, Evain M, Menchetti S (2006) Temperature dependence of the silver distribution in the crystal structure of natural pearceite, (Ag,Cu)16(As,Sb)2S11, Acta Crystallographica, B62, 212-219

Locock A J, Ercit T S, Kjellman J, Piilonen C (2006) New mineral names, American Mineralogist, 91, 1945-1954   [view file]

Bindi L, Evain M, Spry P G, Menchetti S (2007) The pearceite-polybasite group of minerals: crystal chemistry and new nomenclature rules, American Mineralogist, 92, 918-925   [view file]

Bindi L, Voudouris P, Spry P G (2013) Structural role of tellurium in the minerals of the pearceite-polybasite group, Mineralogical Magazine, 77, 419-428

Markl G, Keim M F, Bayerl R (2019) Unusual mineral diversity in hydrothermal vein-type deposit: The Clara mine, SW Germany, as a type example, The Canadian Mineralogist, 57, 427-456