Morinite Mineral Data

Morinite Mineral Data +

General Morinite Information

Chemical Formula:

NaCa2Al2(PO4)2(F,OH)5·2(H2O)

Composition:

Molecular Weight = 475.59 gm

Sodium 4.83 % Na 6.52 % Na₂O

Calcium 16.85 % Ca 23.58 % CaO

Aluminum 11.35 % Al 21.44 % Al₂O₃

Phosphorus 13.03 % P 29.85 % P₂O₅

Hydrogen 1.11 % H 9.94 % H₂O

Oxygen 37.85 % O

Fluorine 14.98 % F 14.98 % F

- % F -6.31 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaCa₂Al₂(PO₄)₂F_3.75(OH)_1.25·2(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1891

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 300001

Jezekite

PDF 33-1219

Morinite Image

Images:

Morinite

Comments: Pale violet crystalline morinite in white crystalline fluorapatite.
Location: Hugo Mine, Keystone, Pennington County, South Dakota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Morinite Crystallography

Axial Ratios:

a:b:c =0.8842:1:0.5091

Cell Dimensions:

a = 9.454, b = 10.692, c = 5.444, Z = 2; beta = 105.46° V = 530.38 Den(Calc)= 2.98

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.468(1), 2.948(0.86), 2.887(0.76),

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Hawthorne F C , The Canadian Mineralogist , 17 (1979) p.93-102, The crystal structure of morinite

Physical Properties of Morinite

Cleavage:

[100] Perfect, [001] Indistinct

Color:

Colorless, White, Light pink, Pink.

Density:

2.962

Diaphaniety:

Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Morinite

Gladstone-Dale:

CI meas= 0.063 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.069 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1878,KPDmeas= 0.1889,KC= 0.2017

Optical Data:

Biaxial (-), a=1.551, b=1.563, g=1.565, bire=0.0140, 2V(Calc)=44, 2V(Meas)=43.

Calculated Properties of Morinite

Electron Density:

r_electron=2.94 gm/cc
note: r_Morinite=2.96 gm/cc.

Fermion Index

Fermion Index = 0.00041
Boson Index = 0.99959

Photoelectric:

PE_Morinite= 3.20 barns/electron
U=PE_Morinite x r_electron= 9.42 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Morinite is Not Radioactive

Morinite Classification

Dana Class:

42.4.2.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.4)where (AB)5 (XO4)2 Zq · x(H2O)

(42.4.2)Dana Group

42.4.2.1 Morinite NaCa2Al2(PO4)2(F,OH)5·2(H2O) P 2₁/m 2/m

42.4.2.2 Esperanzaite! NaCa2Al2(AsO4)2F4(OH)·2(H2O) P 2₁/m 2/m

Strunz Class:

VII/D.50-30 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K

VII/D.50 - Matulaite - Morinite series

VII/D.50-10 Matulaite CaAl18(PO4)12(OH)20·28(H2O) P 2₁/c 2/m

VII/D.50-20 Foggite CaAl(PO4)(OH)2·(H2O) A2122 2 2 2

VII/D.50-25 Krasnovite! Ba(Al,Mg)(PO4,CO3)(OH)2·(H2O) Pnna,Pnnn 2/m 2/m 2/m

VII/D.50-30 Morinite NaCa2Al2(PO4)2(F,OH)5·2(H2O) P 2₁/m 2/m

Other Morinite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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

Morinite

NaCa2Al2(PO4)2(F,OH)5·2(H2O)
Dana No: 42.4.2.1 Strunz No: VII/D.50-30
Locality:

Notes: