Stannomicrolite Mineral Data (original) (raw)

General Stannomicrolite Information

Help on Chemical Formula: Chemical Formula:

(Sn++,Fe++,Mn++)(Ta,Nb,Sn++++)2(O,OH)7

Help on Composition: Composition:

Molecular Weight = 637.44 gm

Tantalum 34.06 % Ta 41.59 % Ta2O5

Titanium 0.75 % Ti 1.25 % TiO2

Manganese 0.86 % Mn 1.11 % MnO

Niobium 5.83 % Nb 8.34 % Nb2O5

Iron 1.75 % Fe 2.25 % FeO

Tin 39.11 % Sn 35.93 % SnO / 9.46 % SnO2

Hydrogen 0.06 % H 0.57 % H2O

Oxygen 17.57 % O

______ ______

100.00 % 100.50 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Sn1.7Fe2+0.2Mn2+0.1Ta1.2Sn0.4Nb0.4Ti0.1O6.6(OH)0.4

Help on Environment: Environment:

Replacing ferrowodginite inclusions in tantalian cassiterite, in a museum specimen from a granite pegmatite.

Help on IMA Status: IMA Status:

Approved IMA 1977

Help on Locality: Locality:

Sukula, Tammela, Finland. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for tin (STANNum), in the formula and membership in the microlite subgroup of the pyrochlore group.

Help on Name Pronunciation: Name Pronunciation:

Stannomicrolite + Pronunciation Say STANNOMICROLITE

Help on Synonym: Synonym:

ICSD 38892

PDF 13-1441

Sukulaite

Stannomicrolite Image

Click Here for Larger Stannomicrolite Image in a New Browser Window Images:

Click Here for Larger Stannomicrolite Image Stannomicrolite Stokesite Comments: Stokesite "ball" composed of lath-like tan or clear crystals with several micro crystals of yellow stannomicrolite. Location: Urucum mine, Galileia, Minas Gerais, Brazil.Scale: 1.2 cm. © Tom Loomis / Dakota Matrix

Stannomicrolite Crystallography

Help on Cell Dimensions: Cell Dimensions:

a = 10.57, Z = 8; V = 1,180.93 Den(Calc)= 7.17

Help on Crystal System: Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.05(1), 1.589(0.8), 1.866(0.8),

Click Here for Large Stannomicrolite Structure Window Crystal Structure:

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Help on Above

| | Gasperin M , Comptes Rendus Hebdomadaires des Seances de l Academie des Sciences , 240 (1955) p.2340-2342, Synthese et identification de deux oxydes doubles de tantale et d etain, Sample: synthetic | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Stannomicrolite

Help on Color: Color:

Yellow brown.

Help on Density: Density:

8.34

Help on Diaphaneity: Diaphaneity:

Translucent

Help on Fracture: Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Help on Habit: Habit:

Selvage - As a reaction rim, surrounding the host mineral.

Help on Hardness: Hardness:

4.5-5.5 - Near Apatite

Help on Luster: Luster:

Adamantine

Optical Properties of Stannomicrolite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.202 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.072 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1506,KPDmeas= 0.1295,KC= 0.1623
Ncalc = 2.16 - 2.35

Help on Optical Data: Optical Data:

Isotropic, n=2.08.

Calculated Properties of Stannomicrolite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=6.19 gm/cc
note: Specific Gravity of Stannomicrolite =7.17 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Help on Photoelectric: Photoelectric:

PEStannomicrolite = 541.28 barns/electron
U=PEStannomicrolite x rElectron Density=3,352.27 barns/cc.

Help on Radioactivity: Radioactivity:

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

Stannomicrolite Classification

Help on Dana Class: Dana Class:

08.02.02.06 (08)Multiple Oxides with Nb, Ta, and Ti

(08.02)where (A)2 (B2O6) (O,OH,F)

(08.02.02)Pyrochlore Group (Microlite Subgroup; Ta>Nb;(Ta+Nb)>2(Ti)

08.02.02.01 Microlite (Na,Ca)2Ta2O6(O,OH,F) F d3m 4/m 3 2/m

08.02.02.02 Bariomicrolite Ba(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m

08.02.02.03 Plumbomicrolite (Pb,Ca,U)2Ta2O6(OH) F d3m 4/m 3 2/m

08.02.02.04 Uranmicrolite (U,Ca)2(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m

08.02.02.05 Bismutomicrolite (Bi,Ca)(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m

08.02.02.06 Stannomicrolite (Sn,Fe,Mn)(Ta,Nb,Sn)2(O,OH)7 F d3m 4/m 3 2/m

08.02.02.07 Stibiomicrolite (Sb,Ca,Na)2(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m

08.02.02.08 Fluornatromicrolite! (Na,Ca,Bi)2Ta2O6F F d3m 4/m 3 2/m

Help on Strunz Class: Strunz Class:

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

04.D - Metal:Oxygen = 1:2 and similar

04.DH -With large (� medium-sized) cations; sheets of edge-sharing octahedra

04.DH.15 Alumotungstite (W,Al)(O,OH)3(?) Unk Cubic

04.DH.15 Betafite (Ca,U)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Ferritungstite (K,Ca,Na)(W,Fe)2(O,OH)6•(H2O) F d3m 4/m 3 2/m

04.DH.15 Cesstibtantite (Cs,Na)SbTa4O12 F d3m 4/m 3 2/m

04.DH.15 Bismutomicrolite (Bi,Ca)(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Ceriopyrochlore-(Ce) (Ce,Ca,Y)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m

04.DH.15 Bariopyrochlore (Ba,Sr)(Nb,Ti)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Bariomicrolite Ba(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Calciobetafite Ca2(Ti,Nb)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Jixianite Pb(W,Fe)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Plumbomicrolite (Pb,Ca,U)2Ta2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Kalipyrochlore (H2O,Sr)(Nb,Ti)(O,OH)6•(H2O,K) F d3m 4/m 3 2/m

04.DH.15 Plumbopyrochlore (Pb,Y,U,Ca)2-xNb2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Strontiopyrochlore* Sr2Nb2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Uranmicrolite (U,Ca)2(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Pyrochlore (Na,Ca)2Nb2O6(OH,F) F d3m 4/m 3 2/m

04.DH.15 Microlite (Na,Ca)2Ta2O6(O,OH,F) F d3m 4/m 3 2/m

04.DH.15 Natrobistantite (Na,Cs)Bi(Ta,Nb,Sb)4O12 F d3m 4/m 3 2/m

04.DH.15 Plumbobetafite (Pb,U,Ca)(Ti,Nb)2O6(OH,F) F d3m 4/m 3 2/m

04.DH.15 Stibiomicrolite (Sb,Ca,Na)2(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Stannomicrolite (Sn,Fe,Mn)(Ta,Nb,Sn)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Stibiobetafite (Sb,Ca)2(Ti,Nb,Ta)2(O,OH)7 F d3m 4/m 3 2/m

04.DH.15 Uranpyrochlore (U,Ca,Ce)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m

04.DH.15 Bismutopyrochlore! (Bi,U,Ca,Pb)1x(Nb,Ta)2O6(OH)•n(H2O) F d3m 4/m 3 2/m

04.DH.15 Fluornatromicrolite! (Na,Ca,Bi)2Ta2O6F F d3m 4/m 3 2/m

04.DH.15 Yttrobetafite-(Y) (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m

04.DH.15 Yttropyrochlore-(Y) (Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7 F d3m 2/m 3

04.DH.15 Elsmoreite! WO3•0.5(H2O) F d3m 4/m 3 2/m

Other Stannomicrolite Information

Help on References: References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Stannomicrolite :
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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Print or Cut-and-Paste your Stannomicrolite Specimen Label here :

Stannomicrolite

(Sn++,Fe++,Mn++)(Ta,Nb,Sn++++)2(O,OH)7
Dana No: 08.02.02.06 Strunz No: 04.DH.15
Locality:

Notes: