Inesite Mineral Data

General Inesite Information

Chemical Formula:

Ca2Mn7Si10O28(OH)2•5(H2O)

Composition:

Molecular Weight = 1,317.65 gm

Calcium 6.08 % Ca 8.51 % CaO

Manganese 29.19 % Mn 37.69 % MnO

Silicon 21.31 % Si 45.60 % SiO₂

Hydrogen 0.92 % H 8.20 % H₂O

Oxygen 42.50 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₂Mn²⁺₇Si₁₀O₂₈(OH)₂•5(H₂O)

Environment:

Hydrothermally altered Mn-bearing rocks.

IMA Status:

Valid Species (Pre-IMA) 1887

Locality:

Banska Stiavnica, Czechoslovakia. Link to MinDat.org Location Data.

Name Origin:

From the Greek ines - "flesh fibers."

Name Pronunciation:

Inesite

Synonym:

Agnolite

ICSD 100627

PDF 33-293

Inesite Image

Images:

Inesite

Comments: Bladed crystals of orangish pink Inesite.
Location: N'Chwaning Mine, Kalahari, South Africa. Scale: 14 x 7.5 cm.
© John Veevaert

Images:

Ruizite Inesite

Comments: 1- 3 mm crystal spray of red orange ruizite in an exposed vug in pink inesite.
Location: Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: Picture size 1 cm.
© John Veevaert

Images:

Hubeite Inesite

Comments: Brown hubeite aggregates accompanied by prismatic pinkish inesite crystals.
Location: Fengjiashan Mine, Daye, Hubei China. Scale: 5.3 x 3.7 x 1.1 cm.
© Fabre Minerals

Images:

Hubeite Inesite

Comments: Translucent, deep root beer brown, platy hueite crystals in fan-like groups to 1mm with delicate pink laths of inesite.
Location: Fengjiashan Mine, Daye Co., Huangshi Prefecture, Hubei Province, China. Scale: Picture Size 5 mm.
© Tom Loomis / Dakota Matrix

Inesite Crystallography

Axial Ratios:

a:b:c =0.9612:1:1.295

Cell Dimensions:

a = 8.889, b = 9.247, c = 11.975, Z = 1; alpha = 88.15°, beta = 132.07°, gamma = 96.64° V = 725.40 Den(Calc)= 3.02

Crystal System:

Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 9.16(1), 2.84(0.8), 2.92(0.8),

Physical Properties of Inesite

Cleavage:

{010} Perfect, {100} Good

Color:

Brown, Brown, Pink, Orange.

Density:

3.029 - 3.1, Average = 3.06

Diaphaneity:

Translucent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Massive - Fibrous - Distinctly fibrous fine-grained forms.

Habit:

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

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

6 - Orthoclase

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Inesite

Gladstone-Dale:

CI meas= 0.044 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.03 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2085,KPDmeas= 0.2055,KC= 0.2149
Ncalc = 1.65 - 1.67

Optical Data:

Biaxial (-), a=1.609, b=1.636, g=1.644, bire=0.0350, 2V(Calc)=56, 2V(Meas)=60.

Calculated Properties of Inesite

Electron Density:

Bulk Density (Electron Density)=2.97 gm/cc
note: Specific Gravity of Inesite =3.02 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Inesite= 8.95 barns/electron
U=PE_Inesite x rElectron Density= 26.55 barns/cc.

Radioactivity:

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

Inesite Classification

Dana Class:

66.03.03.01 (66)Inosilicate Double-Width Unbranched Chains, W=2

(66.03)with chains P>2

(66.03.03)P=5

66.03.03.01 Inesite Ca2Mn7Si10O28(OH)2•5(H2O) P1 1

Strunz Class:

09.DL.05 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DL -Inosilicates with 5-periodic double chains, Si10O28

09.DL.05 Inesite Ca2Mn7Si10O28(OH)2•5(H2O) P1 1

Other Inesite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

See Also:

Links to other databases for Inesite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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

Inesite

Ca2Mn7Si10O28(OH)2•5(H2O)
Dana No: 66.03.03.01 Strunz No: 09.DL.05
Locality:

Notes:

Dakota Matrix
Excalibur Minerals
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