weblogUpdates.ping Taneak Jang, Rejang Land, Tanah Rejang http://rejang-lebong.blogspot.com Taneak Jang, Rejang land, Tanah Rejang: Data mineral Lebong Donok gold mine, Benkeelen, Sumatra, Indonesia.

Data mineral Lebong Donok gold mine, Benkeelen, Sumatra, Indonesia.


Truscottite Mineral Data + Say TRUSCOTTITE

General Truscottite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Mn++)14Si24O58(OH)8·2(H2O)
Help on Composition: Composition: Molecular Weight = 2,364.92 gm

Calcium 20.34 % Ca 28.45 % CaO

Manganese 4.65 % Mn 6.00 % MnO

Silicon 28.50 % Si 60.98 % SiO2

Hydrogen 0.51 % H 4.57 % H2O

Oxygen 46.00 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca12Mn2+2Si24O58(OH)8·2(H2O)
Help on Environment: Environment: Hydrothermal deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1914
Help on Locality: Locality: Lelong Donok gold mine, Benkeelen, Sumatra, Indonesia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Samuel John Truscott (1970-1950), English mining geologist.

Truscottite Image

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Comments: Whitish pearly scaly massive truscottite.
Location: Lebong Donok Mine, Benkeelen, Sumatra Island, Indonesia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Truscottite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.93566
Help on Cell Dimensions: Cell Dimensions: a = 9.731, c = 18.836, Z = 1; V = 1,544.67 Den(Calc)= 2.54
Help on Crystal System: Crystal System: TrigonalSpace Group: p3 or p3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.141(1), 2.84(0.8), 4.21(0.7),

Physical Properties of Truscottite

Help on Cleavage: Cleavage: [0001] Perfect
Help on Color: Color: White.
Help on Density: Density: 2.35
Help on Diaphaniety: Diaphaniety: Transparent to translucent
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Micaceous - Platy texture with "flexible" plates.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Luster: Luster: Pearly
Help on Streak: Streak: white

Optical Properties of Truscottite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.076 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.213,KPDmeas= 0.2302,KC= 0.2139
Help on Optical Data: Optical Data: Uniaxial (-), e=1.552, w=1.53, bire=0.0220.

Calculated Properties of Truscottite

Help on Electron Density: Electron Density:

relectron=2.54 gm/cc
note: rTruscottite =2.54 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.0138
Boson Index = 0.9862
Help on Photoelectric: Photoelectric:

PETruscottite = 4.75 barns/electron
U=PETruscottite x relectron= 12.05 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Truscottite is Not Radioactive

Truscottite Classification

Help on  Dana Class: Dana Class: 73.2.2a.2 (73)Phyllosilicate Condensed Tetrahedral Sheets

(73.2)with double and single layers

(73.2.2a)Reyerite group (Reyerite Subgroup)

73.2.2a.1 Reyerite (Na,K)4Ca14Si22Al2O58(OH)8·6(H2O) P 3 3

73.2.2a.2 Truscottite (Ca,Mn)14Si24O58(OH)8·2(H2O) p3 or p3 Trig
Help on  Strunz Class: Strunz Class: VIII/H.34-20 VIII - Silicates

VIII/H - Phyllosilicates (layered) Mica minerals with other simple layers, [Si6O15]6- and others

VIII/H.34 - Gyrolite series

VIII/H.34-10 Minehillite (K,Na)2-3Ca28(Zn4Al4Si40)O112(OH)16 P 63/mmm, P 62c, or P 63mc Hex

VIII/H.34-20 Truscottite (Ca,Mn)14Si24O58(OH)8·2(H2O) p3 or p3 Trig

VIII/H.34-25 Orlymanite Ca4Mn3Si8O20(OH)6·2(H2O) P 3-,P 3 Trig

VIII/H.34-28 Fedorite KNa4Ca4(Al,Si)16O36(OH,F)4·6(H2O) C1 1

VIII/H.34-30 Reyerite (Na,K)4Ca14Si22Al2O58(OH)8·6(H2O) P 3 3

VIII/H.34-40 Gyrolite NaCa16Si23AlO60(OH)8·64(H2O) P 61 6

VIII/H.34-45 Tungusite Ca14(OH)8(Si8O20)3Fe9(OH)14 P1 1

VIII/H.34-50 Zeophyllite Ca4Si3O8(OH,F)4·2(H2O) R 3 3

VIII/H.34-70 Armstrongite CaZrSi6O15·3(H2O) C 2 2

Other Truscottite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Truscottite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 -École des Mines de Paris



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