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Overite Mineral Data

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General Overite Information

Help on Chemical  Formula: Chemical Formula: CaMgAl(PO4)2(OH)•4(H2O)
Help on Composition: Composition: Molecular Weight = 370.38 gm
   Calcium     10.82 %  Ca   15.14 % CaO
   Magnesium    6.56 %  Mg   10.88 % MgO
   Aluminum     7.28 %  Al   13.76 % Al2O3
   Phosphorus  16.73 %  P    38.32 % P2O5
   Hydrogen     2.45 %  H    21.89 % H2O
   Oxygen      56.16 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMgAl(PO4)2(OH)•4(H2O)
Help on Environment: Environment: In phosphate nodules.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1940
Help on Locality: Locality: Little Green Monster mine, Clay Canyon, about nine km west of Fairfield, Utah Co., Utah, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Edwin J. Over (1903-1963), mineral collector, Colorado Springs, Colorado, USA, who first found the mineral.
Help on Name Pronunciation: Name Pronunciation: Overite Say OVERITE
Help on Synonym: Synonym: ICSD 10406
  PDF 16-157
 

Overite Image

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  Overite

Comments: Clear, pale yellow prismatic crystals of overite deep inside a crandallite vug.
Location: Clay Canyon, Fairfield, Oquirrh Mts, Utah Co., Utah, USA. Scale: Picture Size 2.5 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Overite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.787:1:0.3801
Help on Cell Dimensions: Cell Dimensions: a = 14.78, b = 18.78, c = 7.14, Z = 8; V = 1,981.84 Den(Calc)= 2.48
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pcca
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.832(1), 9.4(0.8), 5.29(0.6),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 2 1) ( 0 1 0) ( 1 2 1) ( 1 1 0) ( 1 0 0)

Warning: this java applet does not work in some browsers because of security restrictions.

 

Physical Properties of Overite

Help on Cleavage: Cleavage: {010} Perfect, {100} Indistinct
Help on Color: Color: Colorless, Light green.
Help on Density: Density: 2.53
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Overite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.001 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2315,KPDmeas= 0.2269,KC= 0.2266
Ncalc = 1.56 - 1.57
Help on Optical Data: Optical Data: Biaxial (-), a=1.568, b=1.574, g=1.58, bire=0.0120, 2V(Calc)=88, 2V(Meas)=75.
 

Calculated Properties of Overite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.57 gm/cc
note: Specific Gravity of Overite =2.53 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0069815652
Boson Index = 0.9930184348
Help on Photoelectric: Photoelectric: PEOverite = 2.51 barns/electron
U=PEOverite x rElectron Density= 6.46 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Overite is Not Radioactive
 

Overite Classification

Help on  Dana Class: Dana Class: 42.11.01.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.01)Overite Group
 
42.11.01.01 Overite CaMgAl(PO4)2(OH)•4(H2O) Pcca 2/m 2/m 2/m
 
42.11.01.02 Segelerite CaMgFe(PO4)2(OH)•4(H2O) Pcca 2/m 2/m 2/m
 
42.11.01.03 Manganosegelerite (Mn,Ca)(Mn,Fe,Mg)Fe(PO4)2(OH)•4(H2O) P bca 2/m 2/m 2/m
 
42.11.01.04 Lunokite (Mn,Ca)(Mg,Fe,Mn)Al(PO4)2(OH)•4(H2O) P bca 2/m 2/m 2/m
 
42.11.01.05 Wilhelmvierlingite CaMnFe(PO4)2(OH)•2(H2O) P bca 2/m 2/m 2/m
 
42.11.01.06 Kaluginite* (Mn,Ca)MgFe(PO4)2(OH)•4(H2O) C cca 2/m 2/m 2/m
 
42.11.01.07 Juonniite! CaMgSc(PO4)2(OH)•4(H2O) P bca 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.DH.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1
 
08.DH.20 Manganosegelerite (Mn,Ca)(Mn,Fe,Mg)Fe(PO4)2(OH)•4(H2O) P bca 2/m 2/m 2/m
 
08.DH.20 Juonniite! CaMgSc(PO4)2(OH)•4(H2O) P bca 2/m 2/m 2/m
 
08.DH.20 Overite CaMgAl(PO4)2(OH)•4(H2O) Pcca 2/m 2/m 2/m
 
08.DH.20 Segelerite CaMgFe(PO4)2(OH)•4(H2O) Pcca 2/m 2/m 2/m
 
08.DH.20 Wilhelmvierlingite CaMnFe(PO4)2(OH)•2(H2O) P bca 2/m 2/m 2/m
 

Other Overite Information

Help on References: References: NAME( AntBidBlaNic4) 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 Overite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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

Overite

CaMgAl(PO4)2(OH)•4(H2O)
Dana No: 42.11.01.01 Strunz No: 08.DH.20
Locality:

 

Notes:

 

 
   
 


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