Caryochroite Mineral Data (original) (raw)

General Caryochroite Information

Help on Chemical Formula: Chemical Formula:

(Na,Sr)3(Fe+++,Mg)10[Ti2Si12O37](O,OH)9•8H2O

Help on Composition: Composition:

Molecular Weight = 1,968.92 gm

Potassium 0.52 % K 0.62 % K2O

Sodium 1.39 % Na 1.87 % Na2O

Strontium 2.76 % Sr 3.26 % SrO

Calcium 0.83 % Ca 1.17 % CaO

Magnesium 1.42 % Mg 2.35 % MgO

Titanium 4.55 % Ti 7.59 % TiO2

Manganese 2.34 % Mn 3.03 % MnO

Aluminum 0.36 % Al 0.67 % Al2O3

Iron 24.08 % Fe 1.39 % FeO / 32.89 % Fe2O3

Silicon 16.75 % Si 35.83 % SiO2

Hydrogen 1.04 % H 9.33 % H2O

Oxygen 43.96 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Na1.19Sr0.62Ca0.41Mn2+0.35K0.26Fe3+7.98Mg1.15Mn2+0.49(Fe2+)0.38Ti1.87Fe3+0.13Si11.74Al0.26O54.1H20.4

Help on Environment: Environment:

Product of supergene alteration (oxidation and dehydration) of a Fe2+-rich protophase locally known as "amorphous greenish grey mineral". Related to nafertisite.

Help on IMA Status: IMA Status:

Approved IMA 2005 (Dana # Added)

Help on Locality: Locality:

Umbozero mine, Alluaiv, Lovozero, Kola Peninsula, Russia Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

The name is taken from the Greek for (nut) and (color) which recalls its hazel-brown color.

Help on Synonym: Synonym:

IMA2005-031

Caryochroite Image

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

Click Here for Larger Caryochroite Image Caryochroite Comments: Hazel brown aggregate of caryochroite tubes. (CanMin, v44:1331). Location: Umbozero mine, Alluaiv, Lovozero, Kola Peninsula, Russia.Scale: Specimen size 5 x 6 cm. © Canadian Mineralogist

Caryochroite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =3.1057:1:4.5992

Help on Cell Dimensions: Cell Dimensions:

a = 16.47, b = 5.303, c = 24.39, Z = 2; beta = 93.5° V = 2,126.26 Den(Calc)= 3.08

Help on Crystal System: Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/n (?)

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 12.1(1), 2.923(0.8), 2.968(0.8),13.3(0.3), 14.1(0.2), 2.631(0.13), 2.692(0.12), 4.38(0.1),

Physical Properties of Caryochroite

Help on Cleavage: Cleavage:

{001} Good

Help on Color: Color:

Hazel brown.

Help on Density: Density:

2.99

Help on Diaphaneity: Diaphaneity:

Translucent

Help on Fracture: Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Help on Habit: Habit:

Pseudomorphous - Occurs in the form of another mineral.

Help on Habit: Habit:

Spherical - Spherical, rounded aggregates.

Help on Hardness: Hardness:

2.5 - Finger Nail

Help on Luster: Luster:

Waxy

Help on Streak: Streak:

pale brownish yellow

Optical Properties of Caryochroite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.071 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.098 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2403,KPDmeas= 0.2475,KC= 0.2663
Ncalc = 1.8 - 1.82

Help on Optical Data: Optical Data:

Biaxial (-), a=1.7, b=1.745, g=1.775, bire=0.0750

Calculated Properties of Caryochroite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.94 gm/cc
note: Specific Gravity of Caryochroite =2.99 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PECaryochroite = 12.33 barns/electron
U=PECaryochroite x relectron= 36.22 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 7.30 (Gamma Ray American Petroleum Institute Units)
Concentration of Caryochroite per GRapi unit = 13.70 (%)

Estimated Radioactivity from Caryochroite - barely detectable

Caryochroite Classification

Help on Dana Class: Dana Class:

56.02.06b.06 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O

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

(56.02.06b)Seidozerite - Lamprophyllite group (Bafertisite subgroup)

56.02.06b.01 Bafertisite Ba(Fe,Mn)2TiSi2O7(O,OH)2 Cm m

56.02.06b.02 Hejtmanite Ba(Mn,Fe)2TiO(Si2O7)(OH,F)2 P 21/m 2/m

56.02.06b.03 Nafertisite! Na3(Fe,Fe)6(Ti2Si12O34)(O,OH)7•2(H2O) A2/m 2/m

56.02.06b.04 Surkhobite! KBa3Ca2Na2(Mn,Fe,Fe)16Ti8(Si2O7)8O8(OH)4(F,O,OH)8 C 2 2

56.02.06b.05 Nechelyustovite! (Ba,Na)2{(Na,Ti,Mn)4[(Ti,Nb)2O2Si4O14](OH,O,F)2}•4.5H2O P 2/m 2/m

56.02.06b.06 Caryochroite! (Na,Sr)3(Fe,Mg)10[Ti2Si12O37](O,OH)9•8H2O P 2/n (?) 2/m

Help on Strunz Class: Strunz Class:

09.HA.65 09 - SILICATES (Germanates)

09.H - Unclassified Silicates

09.HA -With alkali and alkali-earth Elements

09.HA.65 Caryochroite! (Na,Sr)3(Fe,Mg)10[Ti2Si12O37](O,OH)9•8H2O P 2/n (?) 2/m

Other Caryochroite Information

Help on References: References:

NAME( CanMin, v44:1331) PHYS. PROP.(CanMin, v44:1331) OPTIC PROP.(CanMin, v44:1331)

Help on See Also: See Also:

Links to other databases for Caryochroite :
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

Search for Caryochroite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Caryochroite :

A Bijoux Google Search for Caryochroite
Adam's Minerals Google Search for Caryochroite
Cape Minerals Google Search for Caryochroite
Dakota Matrix Minerals Google Search for Caryochroite
Excalibur Mineral Corp. Google Search for Caryochroite
Exceptional Minerals Google Search for Caryochroite
John Betts Fine Minerals Search for Caryochroite
McDougall Minerals Google Search for Caryochroite
Mineral News Website Link
Rock and Mineral Shows Google Search for Caryochroite
Weinrich Minerals, Inc. Google Search for Caryochroite

Ask about Caryochroite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

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

Caryochroite

(Na,Sr)3(Fe+++,Mg)10[Ti2Si12O37](O,OH)9•8H2O
Dana No: 56.02.06b.06 Strunz No: 09.HA.65
Locality:

Notes: