Manganosegelerite Mineral Data

General Manganosegelerite Information

Chemical Formula:

(Mn,Ca)(Mn,Fe++,Mg)Fe+++(PO4)2(OH)•4(H2O)

Composition:

Molecular Weight = 426.99 gm

Calcium 3.75 % Ca 5.25 % CaO

Magnesium 1.71 % Mg 2.83 % MgO

Manganese 12.87 % Mn 16.61 % MnO

Aluminum 0.63 % Al 1.19 % Al₂O₃

Iron 15.70 % Fe 5.05 % FeO / 16.83 % Fe₂O₃

Phosphorus 14.51 % P 33.24 % P₂O₅

Hydrogen 2.12 % H 18.99 % H₂O

Oxygen 48.71 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺_0.6Ca_0.4Mn²⁺_0.4Fe²⁺_0.3Mg_0.3Fe³⁺_0.9Al_0.1(PO₄)₂(OH)ï¿½4(H₂O)

Environment:

In fractures in granite pegmatite.

IMA Status:

Approved IMA 1992

Locality:

Mt. Vasin-Myl'k, Voron'i massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named as the manganese analog of segelerite.

Name Pronunciation:

Manganosegelerite

Synonym:

IMA1984-055

Manganosegelerite Crystallography

Axial Ratios:

a:b:c =0.7924:1:0.3942

Cell Dimensions:

a = 14.89, b = 18.79, c = 7.408, Z = 8; V = 2,072.63 Den(Calc)= 2.74

Crystal System:

Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P bca

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

By Intensity(I/I_o): 9.39(1), 2.86(0.9), 4.7(0.5),

Physical Properties of Manganosegelerite

Cleavage:

{001} Indistinct

Color:

Yellow, Yellow green.

Density:

2.76

Diaphaneity:

Transparent

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.

Hardness:

3-4 - Calcite-Fluorite

Luster:

Vitreous (Glassy)

Streak:

yellow

Optical Properties of Manganosegelerite

Gladstone-Dale:

CI meas= -0.015 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2453,KPDmeas= 0.2435,KC= 0.2398
Ncalc = 1.66

Optical Data:

Biaxial (+), a=1.657, b=1.668, g=1.691, bire=0.0340, 2V(Calc)=72, 2V(Meas)=70-75. Dispersion r < v marked.

Pleochroism (x):

yellow.

Pleochroism (z):

pale yellow.

Calculated Properties of Manganosegelerite

Electron Density:

Bulk Density (Electron Density)=2.74 gm/cc
note: Specific Gravity of Manganosegelerite =2.76 gm/cc.

Fermion Index:

Fermion Index = 0.005322737
Boson Index = 0.994677263

Photoelectric:

PE_{Manganosegelerite}= 9.07 barns/electron
U=PE_{Manganosegelerite} x rElectron Density= 24.87 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Manganosegelerite is Not Radioactive

Manganosegelerite Classification

Dana Class:

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

(42.11)where (AB)4 (XO4)3 Zq ï¿½ 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

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 Manganosegelerite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.79,p185,1994) OPTIC PROP.(AntBidBlaNic4)

See Also:

Links to other databases for Manganosegelerite :
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

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Manganosegelerite

(Mn,Ca)(Mn,Fe++,Mg)Fe+++(PO4)2(OH)•4(H2O)
Dana No: 42.11.01.03 Strunz No: 08.DH.20
Locality:

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