Miersite Mineral Data + Say MIERSITE


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General Miersite Information

Help on Chemical  Formula: Chemical Formula: (Ag,Cu)I
Help on Composition: Composition: Molecular Weight = 223.69 gm
   Copper   7.10 %  Cu    8.00 % Cu2O
   Silver  36.17 %  Ag   38.85 % Ag2O
   Iodine  56.73 %  I    56.73 % I
             -   %  I    -3.58 % -O=I2
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ag0.75Cu0.25I
Help on Environment: Environment: Forms a partial series with marshite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1898
Help on Locality: Locality: Broken Hill, New South Wales, Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Henry Alexander Miers (1848-1942), English mineralogist, Oxford University.
Help on Synonym: Synonym: ICSD 61542
  PDF 2-499
 

Miersite Image

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Miersite

Comments: Translucent miersite crystals on matrix.
Location: Broken Hill, New South Wales, Australia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Miersite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 6.504, Z = 4; V = 275.13 Den(Calc)= 5.40
Help on Crystal System: Crystal System: Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: F43m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.23(1), 1.95(0.8), 2.28(0.8),
 

Physical Properties of Miersite

Help on Cleavage: Cleavage: [111] Good, [111] Good, [111] Good
Help on Color: Color: Greenish, Canary yellow, Light yellow.
Help on Density: Density: 5.64
Help on Diaphaniety: Diaphaniety: Transparent to subtranslucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: greenish yellow
 

Optical Properties of Miersite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2222,KPDmeas= 0.2128,KC= 0.2128
Help on Optical Data: Optical Data: Isotropic, n=2.2.
 

Calculated Properties of Miersite

Help on Electron Density: Electron Density:

relectron=4.82 gm/cc
note: rMiersite =5.64 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0
Boson Index = 1
Help on Photoelectric: Photoelectric:

PEMiersite = 323.69 barns/electron
U=PEMiersite x relectron=1,558.78 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Miersite is Not Radioactive

 

Miersite Classification

Help on  Dana Class: Dana Class: 9.1.7.2 (9)Anhydrous and Hydrated Halides
  (9.1)where A X
  (9.1.7)Dana Group
 
9.1.7.1 Nantokite CuCl F43m 4 3m
 
9.1.7.2 Miersite (Ag,Cu)I F43m 4 3m
 
9.1.7.3 Marshite CuI F43m 4 3m
Help on  Strunz Class: Strunz Class: III/A.01-30 III - Halogenides
  III/A - Simple halogenides, without water Metal : Halogen = 1 : 1
  III/A.01 - Nantokite - Miersite series
 
III/A.01-10 Nantokite CuCl F43m 4 3m
 
III/A.01-20 Marshite CuI F43m 4 3m
 
III/A.01-30 Miersite (Ag,Cu)I F43m 4 3m
 

Other Miersite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Miersite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Print or Cut-and-Paste your Miersite Specimen Label here :

Miersite

(Ag,Cu)I
Dana No: 9.1.7.2 Strunz No: III/A.01-30
Locality:

 

Notes:

 

 
   
 
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