Fritzscheite Mineral Data

General Fritzscheite Information

Chemical Formula:

Mn(UO2)2[(V,P)O4]2•4(H2O)

Composition:

Molecular Weight = 999.03 gm

Uranium 47.65 % U 54.06 % UO₂

Manganese 5.50 % Mn 7.10 % MnO

Vanadium 8.67 % V 15.47 % V₂O₅

Phosphorus 0.93 % P 2.13 % P₂O₅

Hydrogen 2.02 % H 18.03 % H₂O

Oxygen 35.23 % O

______ ______

100.00 % 96.80 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺(UO₂)₂(VO₄)_1.7(PO₄)_0.3•10(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1865

Locality:

Georg Wagsfort mine, Johanngeorgenstadt, Saxony, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for Karl Julius Fritzsche (1808-1871), German chemist.

Name Pronunciation:

Fritzscheite + Pronunciation

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Fritzscheite Crystallography

Axial Ratios:

a:b:c =1.2836:1:1.8836

Cell Dimensions:

a = 10.59, b = 8.25, c = 15.54, Z = 4; V = 1,357.69 Den(Calc)= 4.89

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnam

Physical Properties of Fritzscheite

Cleavage:

{001} Perfect, {100} Distinct

Color:

Red, Reddish brown.

Density:

4.39

Diaphaneity:

Translucent

Fracture:

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

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous - Pearly

Streak:

brownish white

Optical Properties of Fritzscheite

Gladstone-Dale:

CI meas= 0.295 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.367 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1176,KPDmeas= 0.131,KC= 0.1859
Ncalc = 1.82 - 1.91

Optical Data:

Biaxial (-), b=1.57-1.58, 2V(Meas)=0-25.

Calculated Properties of Fritzscheite

Electron Density:

Bulk Density (Electron Density)=3.94 gm/cc
note: Specific Gravity of Fritzscheite =4.39 gm/cc.

Fermion Index:

Fermion Index = 0.0038197844
Boson Index = 0.9961802156

Photoelectric:

PE_Fritzscheite=1,207.21 barns/electron
U=PE_Fritzscheite x r_electron=4,759.43 barns/cc.

Radioactivity:

GRapi = 3,647,724.57 (Gamma Ray American Petroleum Institute Units)
Concentration of Fritzscheite per GRapi unit = 274.14 (PPB)

Fritzscheite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 8.34 ± 2.08 grams of pure Fritzscheite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 833.85 ±208.46 grams of pure Fritzscheite .

**Estimated Radioactivity from Fritzscheite** - very strong
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Becquerels (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.58 cm	85,296,732	2.31E-03	3,647,724.57	1,199.25
100 gm / 3.52 cm	8,529,673	2.31E-04	364,772.46	119.93
10 gm / 1.63 cm	852,967	2.31E-05	36,477.25	11.99
1 gm / 7.58 mm	85,297	2.31E-06	3,647.72	1.20
0.1 gm / 3.52 mm	8,530	2.31E-07	364.77	0.12
0.01 gm / 1.63 mm	853	2.31E-08	36.48	0.01
0.001 gm / 0.76 mm	85	2.31E-09	3.65	0.00

Weight of pure Fritzscheite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.39 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem

Fritzscheite Classification

Dana Class:

40.02a.25.01 (40)Hydrated Phosphates, etc

(40.02a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++

(40.02a.25)Dana Group

40.02a.25.01 Fritzscheite Mn(UO2)2[(V,P)O4]2•4(H2O) Pnam 2/m 2/m 2/m

Strunz Class:

04.HB.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.H - V[5,6] Vanadates

04.HB -Uranyl Sorovanadates

04.HB.15 Curienite Pb(UO2)2V2O8•5(H2O) Pcan 2/m 2/m 2/m

04.HB.15 Francevillite (Ba,Pb)(UO2)2V2O8•5(H2O) Pcan 2/m 2/m 2/m

04.HB.15 Fritzscheite Mn(UO2)2[(V,P)O4]2•4(H2O) Pnam 2/m 2/m 2/m

Other Fritzscheite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Fritzscheite :
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 - Uranium Minerals

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

Fritzscheite

Mn(UO2)2[(V,P)O4]2•4(H2O)
Dana No: 40.02a.25.01 Strunz No: 04.HB.15
Locality:

Notes: