Paradamite Mineral Data

Paradamite Mineral Data
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General Paradamite Information

Help on Chemical Formula: Chemical Formula: Zn2(AsO4)(OH)
Help on Composition: Composition: Molecular Weight = 286.71 gm
   Zinc      45.61 %  Zn   56.78 % ZnO
   Arsenic   26.13 %  As   40.08 % As2O5
   Hydrogen   0.35 %  H     3.14 % H2O
   Oxygen    27.90 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zn2(AsO4)(OH)
Help on Environment: Environment: Secondary mineral in the oxidized sone of a Ag-Pb-Zn mine.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1956
Help on Locality: Locality: Ojuela mine, Mapimi, Durango, Mexico Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the dimorph of adamite.
Help on Name Pronunciation: Name Pronunciation: Paradamite + Pronunciation Say PARADAMITE
 

Paradamite Image

Click Here for Larger Paradamite Image in a New Browser Window Images:
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Paradamite

Comments: Yellow paradamite crystals on a gossanous matrix.
Location: Ojuela mine, Mapimi, Druango, Mexico. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Paradamite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8687:1:0.8416
Help on Cell Dimensions: Cell Dimensions: a = 5.83, b = 6.711, c = 5.648, Z = 2; alpha = 104.73°, beta = 92.26°, gamma = 76.81° V = 207.92 Den(Calc)= 4.58
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.698(1), 2.838(0.99), 2.994(0.96),
Click Here for Large Paradamite Structure Window Crystal Structure:

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Bennett T J , American Mineralogist , 65 (1980) p.353-354, Crystal structure of paradamite

 

Physical Properties of Paradamite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Light yellow.
Help on Density: Density: 4.55
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Paradamite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1657,KPDmeas= 0.1668,KC= 0.1653
Ncalc = 1.75 - 1.76
Help on Optical Data: Optical Data: Biaxial (-), a=1.726, b=1.771, g=1.78, bire=0.0540, 2V(Calc)=46, 2V(Meas)=50.
 

Calculated Properties of Paradamite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.28 gm/cc
note: Specific Gravity of Paradamite =4.58 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEParadamite = 41.42 barns/electron
U=PEParadamite x rElectron Density= 177.34 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paradamite is Not Radioactive
 

Paradamite Classification
Help on Dana Class: Dana Class: 41.06.07.02 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.06)where (A)2 (XO4) Zq
  (41.06.07)Tarbuttite Group
 
41.06.07.01 Tarbuttite Zn2(PO4)(OH) P1 1
 
41.06.07.02 Paradamite Zn2(AsO4)(OH) P1 1
Help on Strunz Class: Strunz Class: 08.BB.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1
 
08.BB.35 Paradamite Zn2(AsO4)(OH) P1 1
 
08.BB.35 Tarbuttite Zn2(PO4)(OH) P1 1
 

Other Paradamite Information
Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Paradamite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineral and Gemstone Kingdom
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

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Ask about Paradamite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Paradamite

Zn2(AsO4)(OH)
Dana No: 41.06.07.02 Strunz No: 08.BB.35
Locality:

 

Notes: