Tremolite Mineral Data + Say TREMOLITE


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General Tremolite Information
Help on Chemical Formula: Chemical Formula: [ ]Ca2Mg5Si8O22(OH)2
Help on Composition: Composition: Molecular Weight = 812.37 gm
   Calcium     9.87 %  Ca   13.81 % CaO
   Magnesium  14.96 %  Mg   24.81 % MgO
   Silicon    27.66 %  Si   59.17 % SiO2
   Hydrogen    0.25 %  H     2.22 % H2O
   Oxygen     47.27 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Mg5(Si8O22)(OH)2
Help on Environment: Environment: Contact metamorphism of Ca rich rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1790
Help on Locality: Locality: Tremola Valley, Alps. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Synonym: Synonym: ICSD 30126
  PDF 44-1402
 

Tremolite Image

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Tremolite

Comments: Dark green tremolite crystal cluster.
Location: Selleck Road Locality, West Pierrepont, St Lawrence Co., New York, USA. Scale: 4.5x2x1.5 cm.
© John Betts - Fine Minerals

Tremolite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.5449:1:0.2923
Help on Cell Dimensions: Cell Dimensions: a = 9.8385, b = 18.0554, c = 5.2778, Z = 2; beta = 104.751° V = 906.64 Den(Calc)= 2.98
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.12(1), 8.38(1), 2.71(0.9),
Click Here for Large Tremolite Structure Window Crystal Structure:

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Sueno S , Cameron M , Papike J J , Prewitt C T , American Mineralogist , 58 (1973) p.649-664, The high temperature crystal chemistry of tremolite, T = 400 C

View Additional jPOWD Structure files for Tremolite
[1] [10] [11] [12] [13] [2] [3] [4] [5] [6] [7] [8] [9]
 

Physical Properties of Tremolite

Help on Cleavage: Cleavage: [110] Perfect, [010] Distinct
Help on Color: Color: Brown, Colorless, Gray, White, Light green.
Help on Density: Density: 2.9 - 3.2, Average = 3.05
Help on Diaphaniety: Diaphaniety: Transparent to translucent
Help on Fracture: Fracture: Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.
Help on Habit: Habit: Columnar - Forms columns
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luminescence: Luminescence: Fluorescent, Short UV=yellow, Long UV=pink.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Tremolite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.008 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2076,KPDmeas= 0.2028,KC= 0.2092
Help on Optical Data: Optical Data: Biaxial (-), a=1.599-1.612, b=1.613-1.626, g=1.625-1.637, bire=0.0250-0.0260, 2V(Calc)=82-84, 2V(Meas)=88-80. Dispersion r < v.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Tremolite

Help on Electron Density: Electron Density:

relectron=2.98 gm/cc
note: rTremolite =2.98 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.02823
Boson Index = 0.97177
Help on Photoelectric: Photoelectric:

PETremolite = 2.61 barns/electron
U=PETremolite x relectron= 7.76 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tremolite is Not Radioactive
 

Tremolite Classification
Help on Dana Class: Dana Class: 66.1.3a.1 (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.1)Dana Type
  (66.1.3a)Group 2, the calcic amphiboles
 
66.1.3a.1 Tremolite []Ca2Mg5Si8O22(OH)2 C 2/m 2/m
 
66.1.3a.2 Actinolite Ca2(Mg,Fe)5Si8O22(OH)2 C 2/m 2/m
 
66.1.3a.3 Ferro-actinolite []Ca2Fe5Si8O22(OH)2 C 2/m 2/m
 
66.1.3a.4 Magnesiohornblende Ca2[Mg4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m
 
66.1.3a.5 Ferrohornblende []Ca2[Fe4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m
 
66.1.3a.6 Tschermakite []Ca2(Mg3AlFe)Si6Al2O22(OH)2 C 2/m 2/m
 
66.1.3a.6a Aluminoferrotschermakite! []Ca2(Fe2)3Al2(Si6Al2)O22(OH)2 C 2/m 2/m
 
66.1.3a.6b Ferri-ferrotschermakite! []Ca2(Fe2)3(Fe3)2(Si6Al2)O22(OH)2 C 2/m 2/m
 
66.1.3a.6c Ferrotschermakite! []Ca2(Fe3AlFe)Si6Al2O22(OH) C 2/m 2/m
 
66.1.3a.7 Ferro-aluminotschermakite* Ca2Fe3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.1.3a.8 Ferritschermakite Ca2(Fe,Mg)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.1.3a.9 Ferroferritschermakite* Ca2(Fe,Mg)3Fe2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.1.3a.10 Edenite NaCa2Mg5Si7AlO22(OH)2 C 2/m 2/m
 
66.1.3a.10a Fluoro-edenite! NaCa2Mg5Si7AlO22(F,OH)2 C 2/m 2/m
 
66.1.3a.11 Ferro-edenite NaCa2Fe5Si7AlO22(OH)2 C 2/m 2/m
 
66.1.3a.12 Pargasite NaCa2(Mg,Fe)4Al(Si6Al2)O22(OH)2 C 2/m 2/m
 
66.1.3a.12a Potassicpargasite! (K,Na)Ca2(Mg,Fe)5Si8O22(OH,F)2 C 2/m 2/m
 
66.1.3a.13 Ferropargasite NaCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m
 
66.1.3a.13a Ferrochloropargasite! NaCa2(Fe4Al)Si6Al2O22Cl2 C 2/m 2/m
 
66.1.3a.13b Potassic-chloropargasite! (K,Na)Ca2(Mg,Fe2)4Al(Si6Al2O22)(Cl,OH)2 C 2/m 2/m
 
66.1.3a.14 Magnesiohastingsite NaCa2(Mg4Fe)Si6Al2O22(OH)2 C 2/m 2/m
 
66.1.3a.15 Hastingsite NaCa2(Fe4Fe)Si6Al2O22(OH)2 C 2/m 2/m
 
66.1.3a.15a Potassic-chlorohastingsite! (K,Na)Ca2(Fe,Mg)4Fe[Si6Al2O22](Cl,OH)2 C 2/m 2/m
 
66.1.3a.16 Potassic-magnesiosadanagaite (K,Na)Ca2(Mg,Fe,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono
 
66.1.3a.17 Sadanagaite (K,Na)Ca2(Fe,Mg,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono
 
66.1.3a.17a Potassicsadanagaite! (K,Na)Ca2[Fe3(Al,Fe)2][Si5Al3O22](OH)2 C 2,Cm,C 2/m Mono
 
66.1.3a.17b Potassicferrisadanagaite! (K,Na)Ca2(Fe,Mg)2(Fe,Al)2[Si5Al3O22](OH,F,O)2 C 2/m 2/m
 
66.1.3a.17c Magnesiosadanagaite! NaCa2[Mg3(Al,Fe)2]Si5AlO22(OH)2 C 2/m 2/m
 
66.1.3a.18 Kaersutite NaCa2(Mg4Ti)Si6Al2O23(OH)2 C 2/m 2/m
 
66.1.3a.19 Ferrokaersutite NaCa2(Fe4Ti)Si6Al2O22(OH)2 C 2/m 2/m
 
66.1.3a.20 Fluorocannilloite! CaCa2(Mg4Al)Si5Al3O22F2 C 2/m 2/m
 
66.1.3a.20a Cannilloite! CaCa2Mg4Al(Si5Al3)O22(OH)2 C 2/m 2/m
 
66.1.3a.21 IMA2004-034! ([],Na)(Na,Ca)2(Mg,Fe)4Fe[Si8O22](OH)2 C 2/m 2/m
Help on Strunz Class: Strunz Class: VIII/F.10-10 VIII - Silicates
  VIII/F - Inosilicates (chain and band) double chains [Si4O11]6- , Ca2-Amphiboles
  VIII/F.10 - Amphibole group, Tremolite - Sadanagaite series
 
VIII/F.10-10 Tremolite []Ca2Mg5Si8O22(OH)2 C 2/m 2/m
 
VIII/F.10-20 Actinolite Ca2(Mg,Fe)5Si8O22(OH)2 C 2/m 2/m
 
VIII/F.10-30 Ferro-actinolite []Ca2Fe5Si8O22(OH)2 C 2/m 2/m
 
VIII/F.10-40 Magnesiohornblende Ca2[Mg4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m
 
VIII/F.10-50 Ferrohornblende []Ca2[Fe4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m
 
VIII/F.10-60 Tschermakite []Ca2(Mg3AlFe)Si6Al2O22(OH)2 C 2/m 2/m
 
VIII/F.10-65 Aluminoferrotschermakite! []Ca2(Fe2)3Al2(Si6Al2)O22(OH)2 C 2/m 2/m
 
VIII/F.10-70 Ferrotschermakite! []Ca2(Fe3AlFe)Si6Al2O22(OH) C 2/m 2/m
 
VIII/F.10-75 Ferro-aluminotschermakite* Ca2Fe3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
VIII/F.10-77 Ferritschermakite Ca2(Fe,Mg)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
VIII/F.10-80* Ferri-ferrotschermakite! []Ca2(Fe2)3(Fe3)2(Si6Al2)O22(OH)2 C 2/m 2/m
 
VIII/F.10-80 Ferroferritschermakite* Ca2(Fe,Mg)3Fe2(Si7Al)O22(OH)2 C 2/m 2/m
 
VIII/F.10-90 Edenite NaCa2Mg5Si7AlO22(OH)2 C 2/m 2/m
 
VIII/F.10-92 Fluoro-edenite! NaCa2Mg5Si7AlO22(F,OH)2 C 2/m 2/m
 
VIII/F.10-100 Ferro-edenite NaCa2Fe5Si7AlO22(OH)2 C 2/m 2/m
 
VIII/F.10-104 Cannilloite! CaCa2Mg4Al(Si5Al3)O22(OH)2 C 2/m 2/m
 
VIII/F.10-105 Fluorocannilloite! CaCa2(Mg4Al)Si5Al3O22F2 C 2/m 2/m
 
VIII/F.10-110 Pargasite NaCa2(Mg,Fe)4Al(Si6Al2)O22(OH)2 C 2/m 2/m
 
VIII/F.10-120 Ferropargasite NaCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m
 
VIII/F.10-125 Potassicpargasite! (K,Na)Ca2(Mg,Fe)5Si8O22(OH,F)2 C 2/m 2/m
 
VIII/F.10-130 Magnesiohastingsite NaCa2(Mg4Fe)Si6Al2O22(OH)2 C 2/m 2/m
 
VIII/F.10-140 Hastingsite NaCa2(Fe4Fe)Si6Al2O22(OH)2 C 2/m 2/m
 
VIII/F.10-150 Kaersutite NaCa2(Mg4Ti)Si6Al2O23(OH)2 C 2/m 2/m
 
VIII/F.10-160 Ferrokaersutite NaCa2(Fe4Ti)Si6Al2O22(OH)2 C 2/m 2/m
 
VIII/F.10-163 Potassicsadanagaite! (K,Na)Ca2[Fe3(Al,Fe)2][Si5Al3O22](OH)2 C 2,Cm,C 2/m Mono
 
VIII/F.10-165 Potassic-magnesiosadanagaite (K,Na)Ca2(Mg,Fe,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono
 
VIII/F.10-170 Magnesiosadanagaite! NaCa2[Mg3(Al,Fe)2]Si5AlO22(OH)2 C 2/m 2/m
 
VIII/F.10-180 Sadanagaite (K,Na)Ca2(Fe,Mg,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono
 
VIII/F.10-220 Potassicferrisadanagaite! (K,Na)Ca2(Fe,Mg)2(Fe,Al)2[Si5Al3O22](OH,F,O)2 C 2/m 2/m
 

Other Tremolite Information
Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Tremolite :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Applied Mineralogy 6 -Athena 7 - CalTech Mineral Spectroscopy 8 - Crocoite.com Mineral Locations 9 - EUROmin Project 10 - Franklin Minerals(Dunn) 11 -Google Images 12 -Google Scholar 13 -Handbook of Mineralogy (MinSocAm) 14 -Handbook of Mineralogy (UofA) 15 - HyperPhysics 16 -MinDAT 17 -MinMax(Deutsch) 18 -MinMax(English) 19 - Mineral and Gemstone Kingdom 20 -Mineralienatlas (Deutsch) 21 - Minerals in Thin Section-University of North Carolina 22 -Minerals in Thin Sections-Humboldt State 23 - Minerals of Wisconsin 24 -QUT Mineral Atlas 25 - Scandinavian mineral gallery 26 - University of Manchester - Mineral Structure 27 -University of Minnesota 28 - WWW-MINCRYST 29 - YupRocks 30 -École des Mines de Paris

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Tremolite

[ ]Ca2Mg5Si8O22(OH)2
Dana No: 66.1.3a.1 Strunz No: VIII/F.10-10
Locality:

 

Notes:

 
 
   
 
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