General Information
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 Chemical Formula: |
NaCa2Al2(PO4)2(F,OH)5·2(H2O) |
| Composition: |
Molecular Weight = 475.59 gm) |
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| Empirical Formula: |
NaCa2Al2(PO4)2F3.75(OH)1.25·2(H2O) |
| IMA Status: |
Approved IMA 1962 |
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Classification
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| Dana Class: |
42.4.2.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.4)where (AB)5 (XO4)2 Zq · x(H2O) |
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(42.4.2)Dana Group |
| Strunz Class: |
VII/D.50-30 VII - Phosphates, Arsenates and Vanadates |
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VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K |
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VII/D.50 - Matulaite - Morinite series |
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Crystallography
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| Axial Ratios: |
a:b:c =0.8842:1:0.5091 |
| Cell Dimensions: |
a = 9.454, b = 10.692, c = 5.444, Z = 2; beta = 105.46ø V = 530.38 Den(Calc)= 2.98 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P21/m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.468(1) 2.948(0.86) 2.887(0.76) |
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Physical Properties
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| Cleavage: |
[100] Perfect, [001] Indistinct |
| Color: |
colorless, white, light pink, or pink. |
| Density: |
2.962 |
| Diaphaniety: |
Translucent |
| Hardness: |
4-4.5 - Between Fluorite and Apatite |
| Luster: |
Vitreous - Greasy |
| Streak: |
white |
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Optical Properties
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| Optical Data: |
Biaxial (-), a=1.551, b=1.563, g=1.565, bire=0.0140, 2V(Calc)=44, 2V(Meas)=43. |
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Other Information
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Morinite :
1 -Athena Mineralogy
2 - Crocoite.com Mineral Locations
3 - EUROmin Project
4 -MinDat.org Location Data
5 -MinMax
6 - Scandinavian mineral gallery
7 -WWW-MINCRYST
8 -École des Mines de Paris
Search for Morinite using:
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Pronunciation Guide 
