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Clintonite Mineral Data

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General Clintonite Information

Help on Chemical  Formula: Chemical Formula: Ca(Mg,Al)3(Al3Si)O10(OH)2
Help on Composition: Composition: Molecular Weight = 415.81 gm
   Calcium     9.64 %  Ca   13.49 % CaO
   Magnesium  12.86 %  Mg   21.32 % MgO
   Aluminum   22.06 %  Al   41.69 % Al2O3
   Silicon     8.78 %  Si   18.79 % SiO2
   Hydrogen    0.48 %  H     4.33 % H2O
   Oxygen     46.17 %  O
             ______        ______ 
             100.00 %       99.62 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMg2.2Al0.7Al2.7Si1.3O10(OH)2
Help on Environment: Environment: Serpentinized limestones and siliceous skarns near contact metamorphic zones.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1843
Help on Locality: Locality: Amity, Warwick, Orange Co., New York, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for De Witt Clinton (1769-1828), American statesman.
Help on Synonym: Synonym: Brandesite
  Calciotalc
  Seybertite
  Xanthophyllite
 

Clintonite Image

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  Clintonite

Comments: Several interconnected platy crystals of black clintonite variety xanthophyllite on vuggy matrix.
Location: Green Monster Mountain, Prince of Wales Island, Prince of Wales-Outer Ketchikan Co., Alaska, USA. Scale: 4x3x2 cm.
© John Betts - Fine Minerals

Clintonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5808:1:1.1244
Help on Cell Dimensions: Cell Dimensions: a = 5.306, b = 9.135, c = 10.272, Z = 2; beta = 100.01° V = 490.31 Den(Calc)= 2.82
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.56(1), 3.21(0.7), 2.11(0.7),1.505(0.6), 1.485(0.5), 2.45(0.5), 9.68(0.5),
 

Physical Properties of Clintonite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Colorless, Green, Yellow, Red, Reddish brown.
Help on Density: Density: 3 - 3.1, Average = 3.05
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Massive - Lamellar - Distinctly foliated fine-grained forms.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Pearly
Help on Streak: Streak: colorless
 

Optical Properties of Clintonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.016 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.099 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.232,KPDmeas= 0.2145,KC= 0.2111
Ncalc = 1.6 - 1.65
Help on Optical Data: Optical Data: Biaxial (-), a=1.643-1.648, b=1.655-1.662, g=1.655-1.663, bire=0.0120-0.0150, 2V(Calc)=0-28, 2V(Meas)=2-40. Dispersion none.
Help on Pleochroism (x): Pleochroism (x): colorless, pale orange, or reddish brown.
 

Calculated Properties of Clintonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.03 gm/cc
note: Specific Gravity of Clintonite =3.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEClintonite = 2.46 barns/electron
U=PEClintonite x rElectron Density= 7.46 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Clintonite is Not Radioactive
 

Clintonite Classification

Help on  Dana Class: Dana Class: 71.02.02c.02 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.02)with 2:1 Layers
  (71.02.02c)Mica Group (Margarite subgroup)
 
71.02.02c.01 Margarite CaAl2(Al2Si2)O10(OH)2 C 2/c 2/m
 
71.02.02c.02 Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 C 2/m 2/m
 
71.02.02c.03 Bityite CaLiAl2(AlBeSi2)O10(OH)2 C 2/c 2/m
 
71.02.02c.04 Anandite (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2 C 2/m 2/m
 
71.02.02c.05 Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 C 2/m 2/m
 
71.02.02c.06 Ferrokinoshitalite! (Ba,K)(Fe,Mg)3(Si2Al2)O10(OH,F)2 C 2/m 2/m
 
71.02.02c.07 Ganterite! [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 C 2/c 2/m
 
71.02.02c.08 Oxykinoshitalite! (Ba,K)(Mg,Fe,Ti)3(Si,Al)4O10O2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.EC.35 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
 
09.EC.35 Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 C 2/m 2/m
 
09.EC.35 Bityite CaLiAl2(AlBeSi2)O10(OH)2 C 2/c 2/m
 
09.EC.35 Anandite (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2 C 2/m 2/m
 
09.EC.35 Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 C 2/m 2/m
 
09.EC.35 Ferrokinoshitalite! (Ba,K)(Fe,Mg)3(Si2Al2)O10(OH,F)2 C 2/m 2/m
 
09.EC.35 Oxykinoshitalite! (Ba,K)(Mg,Fe,Ti)3(Si,Al)4O10O2 C 2/m 2/m
 

Other Clintonite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Clintonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - HyperPhysics
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

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Clintonite

Ca(Mg,Al)3(Al3Si)O10(OH)2
Dana No: 71.02.02c.02 Strunz No: 09.EC.35
Locality:

 

Notes:

 

 
   
 


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