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:

Inesite   Ruizite 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:

Inesite   Hubeite 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:

Inesite   Hubeite 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 - PinacoidalH-M Symbol ( 1) Space Group: P1 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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