Fluorvesuvianite Mineral Data

General Fluorvesuvianite Information

Chemical Formula:

Ca19(Al,Mg)13[SiO4]10[Si2O7]4(F,OH)10

Composition:

Molecular Weight = 2,912.65 gm

Calcium 26.19 % Ca 36.64 % CaO

Magnesium 1.16 % Mg 1.92 % MgO

Manganese 0.08 % Mn 0.10 % MnO

Aluminum 9.59 % Al 18.12 % Al₂O₃

Iron 2.21 % Fe 2.84 % FeO

Silicon 17.37 % Si 37.15 % SiO₂

Hydrogen 0.06 % H 0.51 % H₂O

Oxygen 38.69 % O

Fluorine 4.67 % F 4.67 % F

- % F -1.97 % -O=F₂

______ ______

100.00 % 99.98 % = TOTAL OXIDE

Empirical Formula:

Ca_19.03Al_10.35Mg_1.39Fe²⁺_1.15Mn²⁺_0.04Si_18.01O₆₈F_7.16(OH)_1.64O_0.8

Environment:

Found in cavities of chloritized diopside skarn.

IMA Status:

Approved IMA 2003 (Dana # Added)

Locality:

Lupikko iron mine, Pitkaranta, Karelia, Russia. Link to MinDat.org Location Data.

Name Origin:

Named as the fluorine-dominant analog of vesuvainite.

Synonym:

IMA2000-037

Fluorvesuvianite Image

Images:

Fluorvesuvianite

Comments: Acicular crystals of fluorvesuvianite in a clear, calcite matrix. (CanMin, v 41, p 1375).
Location: Lupikko iron mine, Pitkaranta, Karelia, Russia. Scale: Picture size 1.2 cm.
© Canadian Mineralogist

Fluorvesuvianite Crystallography

Axial Ratios:

a:c = 1:0.75944

Cell Dimensions:

a = 15.51, c = 11.779, Z = 2; V = 2,833.56 Den(Calc)= 3.41

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/nnc

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

By Intensity(I/I_o): 2.453(1)(620), 2.589(0.5)(224,522), 2.743(0.9)(432,440),2.945(0.35)(004), 3.04(0.3)(510), 3.465(0.3)(420), 4.74(0.2)(202),

Crystal Structure:

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Britvin S N , Antonov A A , Krivovichev S V , Armbruster T , Burns P C , Chukanov N V , The Canadian Mineralogist , 41 (2003) p.1371-1380, Fluorvesuvianite, Ca19(Al,Mg,Fe)13[SiO4]10[Si2O7]4O(F,OH)9, a new mineral species, from Pitkaranta, Karelia, Russia: Description and crystal structure, Locality: Pitkaranta, Karelia, Russia

Physical Properties of Fluorvesuvianite

Cleavage:

None

Color:

Colorless, Silky white.

Density:

3.46

Diaphaneity:

Transparent

Fracture:

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

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

6 - Orthoclase

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Fluorvesuvianite

Gladstone-Dale:

CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2054,KPDmeas= 0.2025,KC= 0.205
Ncalc = 1.7 - 1.71

Optical Data:

Uniaxial (-), e=1.699, w=1.702, bire=0.0030.

Calculated Properties of Fluorvesuvianite

Electron Density:

Bulk Density (Electron Density)=3.38 gm/cc
note: Specific Gravity of Fluorvesuvianite =3.41 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Fluorvesuvianite}= 4.89 barns/electron
U=PE_{Fluorvesuvianite} x rElectron Density= 16.54 barns/cc.

Radioactivity:

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

Fluorvesuvianite Classification

Dana Class:

58.02.04.03 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups

(58.02)with cations in [6] and higher coordination; single and double groups (n=1,2)

(58.02.04)Vesuvianite Group

58.02.04.01 Vesuvianite Ca10Mg2Al4(SiO4)5(Si2O7)2(OH)4 P 4/n 4/m

58.02.04.02 Wiluite! Ca19(Al,Mg,Fe,Ti)13(B,Al,[])5Si18O68(O,OH)10 P 4/nnc 4/m 2/m 2/m

58.02.04.03 Fluorvesuvianite! Ca19(Al,Mg)13[SiO4]10[Si2O7]4(F,OH)10 P 4/nnc 4/m 2/m 2/m

58.02.04.04 Manganvesuvianite! Ca19Mn(Al,Mn,Fe)10(Mg,Mn)2Si18O69(OH)9 P 4/n 4/m

Strunz Class:

09.BG.35 09 - SILICATES (Germanates)

09.B - Sorosilicates

09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups;

09.BG.35 Vesuvianite Ca10Mg2Al4(SiO4)5(Si2O7)2(OH)4 P 4/n 4/m

09.BG.35 Fluorvesuvianite! Ca19(Al,Mg)13[SiO4]10[Si2O7]4(F,OH)10 P 4/nnc 4/m 2/m 2/m

09.BG.35 Wiluite! Ca19(Al,Mg,Fe,Ti)13(B,Al,[])5Si18O68(O,OH)10 P 4/nnc 4/m 2/m 2/m

09.BG.35 Manganvesuvianite! Ca19Mn(Al,Mn,Fe)10(Mg,Mn)2Si18O69(OH)9 P 4/n 4/m

Other Fluorvesuvianite Information

References:

NAME( CanMin, v 41, p 1371) PHYS. PROP.(CanMin, v 41, p 1371) OPTIC PROP.(CanMin, v 41, p 1371)

See Also:

Links to other databases for Fluorvesuvianite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Fluorvesuvianite

Ca19(Al,Mg)13[SiO4]10[Si2O7]4(F,OH)10
Dana No: 58.02.04.03 Strunz No: 09.BG.35
Locality:

Notes: