Strunzite Mineral Data (original) (raw)
General Strunzite Information
Mn++Fe+++2(PO4)2(OH)2•6(H2O)
Molecular Weight = 498.68 gm
Manganese 11.02 % Mn 14.23 % MnO
Iron 22.40 % Fe 32.02 % Fe2O3
Phosphorus 12.42 % P 28.46 % P2O5
Hydrogen 2.83 % H 25.29 % H2O
Oxygen 51.33 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Mn2+Fe3+2(PO4)2(OH)2•6(H2O)
Valid Species (Pre-IMA) 1958
Hangedor Pegmatite, Oberfalz, Bavaria, Germany. Link to MinDat.org Location Data.
Named for Hugo Strunz (1910-), mineralogist, Berlin, who authored the Strunz system of mineral classification.
ICSD 100409
PDF 11-133
Strunzite Image
Strunzite Crystallography
a:b:c =1.0397:1:0.7404
a = 10.228, b = 9.837, c = 7.284, Z = 2; alpha = 90.17°, beta = 98.44°, gamma = 117.44° V = 643.37 Den(Calc)= 2.57
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
By Intensity(I/Io): 9.02(1), 5.32(0.8), 4.35(0.6),
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| | Fanfani L , Tomassini M , Zanazzi P F , Zanzari A R , Tschermaks Mineralogische und Petrographische Mitteilungen , 25 (1978) p.77-87, The crystal structure of strunzite, a contribution to the, crystal chemistry of basic ferric-manganous hydrated phosphates, Locality: Big Chief mine, Glendale, South Dakota | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Strunzite
{???} Good
Brownish yellow, Golden yellow, Straw yellow.
2.47 - 2.56, Average = 2.51
Translucent
Acicular - Occurs as needle-like crystals.
Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.
4 - Fluorite
Vitreous (Glassy)
light yellow
Optical Properties of Strunzite
CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2596,KPDmeas= 0.2663,KC= 0.267
Ncalc = 1.66 - 1.69
Biaxial (-), a=1.619, b=1.67, g=1.72, bire=0.1010, 2V(Calc)=86, 2V(Meas)=75-80.
pale yellow.
pale yellow.
yellow.
Calculated Properties of Strunzite
Bulk Density (Electron Density)=2.51 gm/cc
note: Specific Gravity of Strunzite =2.52 gm/cc.
Fermion Index = 0.0049989957
Boson Index = 0.9950010043
PEStrunzite = 9.93 barns/electron
U=PEStrunzite x rElectron Density= 24.94 barns/cc.
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Strunzite is Not Radioactive
Strunzite Classification
42.11.09.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
(42.11)where (AB)4 (XO4)3 Zq � x(H2O)
(42.11.09)Strunzite Group
42.11.09.01 Strunzite MnFe2(PO4)2(OH)2•6(H2O) P1 1
42.11.09.02 Ferrostrunzite FeFe2(PO4)2(OH)2•6(H2O) P 1,P1 Tri
42.11.09.03 Ferristrunzite FeFe2(PO4)2(OH)3•5(H2O) P1,P 1 Tri
08.DC.25 08 - PHOSPHATES, ARSENATES, VANADATES
08.D - Phosphates, etc
08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
08.DC.25 Ferrostrunzite FeFe2(PO4)2(OH)2•6(H2O) P 1,P1 Tri
08.DC.25 Ferristrunzite FeFe2(PO4)2(OH)3•5(H2O) P1,P 1 Tri
08.DC.25 Metavauxite FeAl2(PO4)2(OH)2•8(H2O) P 21/c 2/m
08.DC.25 Strunzite MnFe2(PO4)2(OH)2•6(H2O) P1 1
Other Strunzite Information
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Links to other databases for Strunzite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Print or Cut-and-Paste your Strunzite Specimen Label here :
Strunzite
Mn++Fe+++2(PO4)2(OH)2•6(H2O)
Dana No: 42.11.09.01 Strunz No: 08.DC.25
Locality:
Notes: