Dovyrenite Mineral Data

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General Dovyrenite Information

Chemical Formula:

Ca6Zr[Si2O7]2(OH)4

Composition:

Molecular Weight = 728.49 gm

Calcium 31.57 % Ca 44.18 % CaO

Hafnium 0.10 % Hf 0.12 % HfO₂

Magnesium 0.08 % Mg 0.13 % MgO

Zirconium 12.40 % Zr 16.75 % ZrO₂

Titanium 0.03 % Ti 0.05 % TiO₂

Manganese 0.02 % Mn 0.02 % MnO

Niobium 0.03 % Nb 0.04 % Nb₂O₅

Iron 0.21 % Fe 0.28 % FeO

Silicon 15.42 % Si 32.99 % SiO₂

Hydrogen 0.61 % H 5.46 % H₂O

Oxygen 39.53 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca_5.73Mg_0.02Fe²⁺_0.02Mn²⁺_0.002Hf_0.004Zr_0.99Nb_0.002Ti_0.005Si₄(O)_13.58OH_4.41

Environment:

Skarned carbonate xenoliths in a foshagite-vesuvianite skarn. New structure, possible heterophyllosilicate.

IMA Status:

Approved IMA 2007 (Dana # Added)

Locality:

Dovyren Bald Mountain (Ioko-Dovyren layered massif), Siberia, Russia. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Synonym:

IMA2007-002

Dovyrenite Image

Images:

Dovyrenite

Comments: BSE image of a large dovyrenite crystal in vesuvianite-foshagite skarn. Abbrev: dovyrenite (Dov), foshagite (Fsh), vesuvianite (Ves), calcite (Cal), (Mineralogia Polonica, v38: no 1, p18).
Location: Dovyren Bald Mountain (Ioko-Dovyren layered massif), Siberia, Russia.. Scale: See Image.
© Mineralogia Polonica

Images:

Dovyrenite

Comments: Dovyrenite crystal with preserved orthorhombic prism {0kl}. Abbrev: dovyrenite (Dov), vesuvianite (Ves). (Mineralogia Polonica, v38: no 1, p19).
Location: Dovyren Bald Mountain (Ioko-Dovyren layered massif), Siberia, Russia.. Scale: See Image.
© Mineralogia Polonica

Dovyrenite Crystallography

Axial Ratios:

a:b:c =0.3006:1:0.1978

Cell Dimensions:

a = 5.666, b = 18.844, c = 3.728, Z = 1; V = 398.04 Den(Calc)= 3.04

Crystal System:

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

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

By Intensity(I/I_o): 3.0727(1), 5.426(0.63), 3.1406(0.39),2.7468(0.36), 1.864(0.33), 1.6848(0.26), 1.8786(0.26), 2.5979(0.25),

Crystal Structure:

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Kadiyski M , Armbruster T , Galuskin E V , Pertsev N N , Zadov A E , Galuskina I O , Wrzalik R , Dzierzanowski P , Kislov E V , American Mineralogist , 93 (2008) p.456-462, The modular structure of dovyrenite, Ca6Zr[Si2O7]2(OH)4: alternate stacking of, tobermorite and rosenbuschite-like units, Locality: skarndolomite xenoliths, Dovyren massif, Russia

Physical Properties of Dovyrenite

Cleavage:

{010} Perfect, {100} Imperfect

Color:

Colorless.

Diaphaneity:

Transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

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

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Dovyrenite

Gladstone-Dale:

CI calc= -0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2191,KC= 0.2165
Ncalc = 1.66

Optical Data:

Biaxial (+), a=1.659, g=1.676, bire=0.0170

Calculated Properties of Dovyrenite

Electron Density:

Bulk Density (Electron Density)=3.01 gm/cc
note: Specific Gravity of Dovyrenite =3.04 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Dovyrenite= 21.70 barns/electron
U=PE_Dovyrenite x rElectron Density= 65.27 barns/cc.

Radioactivity:

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

Dovyrenite Classification

Dana Class:

56.02.05.07 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O

(56.02)with cations in [4] and/or >[4] coordination

(56.02.05)Mosandrite and related species

56.02.05.01 Mosandrite Na(Na,Ca)2(Ca,Ce,Y)4(Ti,Nb,Zr)(Si2O7)2(O,F)2F3 P 2₁ 2

56.02.05.02 Nacareniobsite-(Ce) NbNa3Ca3(Ce,La)(Si2O7)2OF3 P 2₁/a 2/m

56.02.05.03 Fersmanite Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3 C 2/c 2/m

56.02.05.04 Gotzenite (Ca,Na)3(Ti,Al)Si2O7(F,OH)2 P1 1

56.02.05.05 Rinkite! Na(Na,Ca)2(Ca,Ce)4(Ti,Nb)(Si2O7)2(O,F)2 P 2₁ 2

56.02.05.06 IMA2008-024! (Ca,Na,REE,[])7(Nb,Ti)[Si2O7]2OF3 Cc m

56.02.05.07 Dovyrenite! Ca6Zr[Si2O7]2(OH)4 Pnnm 2/m 2/m 2/m

Strunz Class:

09.BE.23 09 - SILICATES (Germanates)

09.B - Sorosilicates

09.BE -Si2O7 groups with additional anions;

09.BE.23 Dovyrenite! Ca6Zr[Si2O7]2(OH)4 Pnnm 2/m 2/m 2/m

Other Dovyrenite Information

References:

NAME( Mineralogia Polonica, v38: no 1) PHYS. PROP.(Mineralogia Polonica, v38: no 1) OPTIC PROP.(Mineralogia Polonica, v38: no 1)

See Also:

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

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Dovyrenite

Ca6Zr[Si2O7]2(OH)4
Dana No: 56.02.05.07 Strunz No: 09.BE.23
Locality:

Notes: