Parasymplesite Mineral Data

Parasymplesite Mineral Data
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General Parasymplesite Information

Help on Chemical Formula: Chemical Formula: Fe++3(AsO4)2•8(H2O)
Help on Composition: Composition: Molecular Weight = 589.50 gm
   Iron      28.42 %  Fe   36.56 % FeO
   Arsenic   25.42 %  As   38.99 % As2O5
   Hydrogen   2.74 %  H    24.45 % H2O
   Oxygen    43.42 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+3(AsO4)2•8(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1837
Help on Locality: Locality: Kiura, Ohita, Japan Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek "to bring together", in allusion to its relations to other minerals. Dimorphous with symplesite.
Help on Name Pronunciation: Name Pronunciation: Parasymplesite + Pronunciation Say PARASYMPLESITE
Help on Synonym: Synonym: ICSD 30646
  PDF 42-536
 

Parasymplesite Image

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Parasymplesite

Comments: Opaque, prismatic parasymplesite crystals.
Location: Ojuela mine, Mapimi, Durango, Mexico. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Parasymplesite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.7657:1:0.3543
Help on Cell Dimensions: Cell Dimensions: a = 10.349, b = 13.515, c = 4.789, Z = 2; beta = 104.92° V = 647.24 Den(Calc)= 3.02
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.75(1), 3.025(0.5), 8.057(0.3),
Click Here for Large Parasymplesite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Mori H , Ito T , Acta Crystallographica , 3 (1950) p.1-6, The structure of vivianite and symplesite, Locality: Kiura, Japan

 

Physical Properties of Parasymplesite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Greenish blue, Light greenish blue.
Help on Density: Density: 3.07
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Silky
Help on Streak: Streak: white
 

Optical Properties of Parasymplesite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.22,KPDmeas= 0.2164,KC= 0.215
Ncalc = 1.65 - 1.66
Help on Optical Data: Optical Data: Biaxial (-), a=1.628, b=1.66, g=1.705, bire=0.0770
Help on Pleochroism (x): Pleochroism (x): deep blue.
Help on Pleochroism (y): Pleochroism (y): nearly colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Parasymplesite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.00 gm/cc
note: Specific Gravity of Parasymplesite =3.07 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0062377496
Boson Index = 0.9937622504
Help on Photoelectric: Photoelectric: PEParasymplesite = 25.38 barns/electron
U=PEParasymplesite x rElectron Density= 76.14 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Parasymplesite is Not Radioactive
 

Parasymplesite Classification
Help on Dana Class: Dana Class: 40.03.06.06 (40)Hydrated Phosphates, etc
  (40.03)where (A++)3 (XO4)2 · x(H2O)
  (40.03.06)Vivianite Group
 
40.03.06.01 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m
 
40.03.06.02 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m
 
40.03.06.03 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m
 
40.03.06.04 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m
 
40.03.06.05 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m
 
40.03.06.06 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m
 
40.03.06.07 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m
 
40.03.06.08 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m
 
40.03.06.09 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m
Help on Strunz Class: Strunz Class: 08.CE.40 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CE -With only medium-sized cations, RO4:H2O £ 1:2.5
 
08.CE.40 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Ferrisymplesite Fe3(AsO4)2(OH)3•5(H2O) None
 
08.CE.40 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Manganohornesite (Mn,Mg)3(AsO4)2•8(H2O) P 21/c 2/m
 
08.CE.40 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m
 

Other Parasymplesite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Parasymplesite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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Ask about Parasymplesite here :
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Print or Cut-and-Paste your Parasymplesite Specimen Label here :

Parasymplesite

Fe++3(AsO4)2•8(H2O)
Dana No: 40.03.06.06 Strunz No: 08.CE.40
Locality:

 

Notes: