Clintonite Mineral Data

Clintonite Mineral Data

[Mineral Auctions] [Register] [Current Auctions] [Log In] [www.danweinrich.com]
Dan Weinrich Auctions
Specializing In Live Weekly Auctions Of Top Quality Mineral Specimens
The Place To Find Great Specimens At Great Prices!

General Clintonite Information

Chemical Formula:

Ca(Mg,Al)3(Al3Si)O10(OH)2

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

Empirical Formula:

CaMg_2.2Al_0.7Al_2.7Si_1.3O₁₀(OH)₂

Environment:

Serpentinized limestones and siliceous skarns near contact metamorphic zones.

IMA Status:

Valid Species (Pre-IMA) 1843

Locality:

Amity, Warwick, Orange Co., New York, USA. Link to MinDat.org Location Data.

Name Origin:

Named for De Witt Clinton (1769-1828), American statesman.

Synonym:

Brandesite

Calciotalc

Seybertite

Xanthophyllite

Clintonite Image

Images:

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

Axial Ratios:

a:b:c =0.5808:1:1.1244

Cell Dimensions:

a = 5.306, b = 9.135, c = 10.272, Z = 2; beta = 100.01° V = 490.31 Den(Calc)= 2.82

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 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),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Takeuchi Y , Sadanaga R , Acta Crystallographica , 12 (1959) p.945-946, The crystal structure of xanthophyllite, Locality: Chichibu mine, Japan

Physical Properties of Clintonite

Cleavage:

[001] Perfect

Color:

Colorless, Green, Yellow, Red, Reddish brown.

Density:

3 - 3.1, Average = 3.05

Diaphaniety:

Transparent to translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Massive - Lamellar - Distinctly foliated fine-grained forms.

Habit:

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

Hardness:

4-5 - Fluorite-Apatite

Luminescence:

Non-fluorescent.

Luster:

Pearly

Streak:

colorless

Optical Properties of Clintonite

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

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.

Pleochroism (x):

colorless, pale orange, or reddish brown.

Calculated Properties of Clintonite

Electron Density:

r_electron=3.03 gm/cc
note: r_Clintonite=3.05 gm/cc.

Fermion Index

Fermion Index = 0.01731
Boson Index = 0.98269

Photoelectric:

PE_Clintonite= 2.46 barns/electron
U=PE_Clintonite x r_electron= 7.46 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Clintonite is Not Radioactive

Clintonite Classification

Dana Class:

71.2.2c.2 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.2)with 2:1 Layers

(71.2.2c)Mica Group (Margarite subgroup)

71.2.2c.1 Margarite CaAl2(Al2Si2)O10(OH)2 C 2/c 2/m

71.2.2c.2 Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 C 2/m 2/m

71.2.2c.3 Bityite CaLiAl2(AlBeSi2)O10(OH)2 C 2/c 2/m

71.2.2c.4 Anandite (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2 C 2/m 2/m

71.2.2c.5 Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 C 2/m 2/m

71.2.2c.6 Ferrokinoshitalite! (Ba,K)(Fe,Mg)3(Si2Al2)O10(OH,F)2 C 2/m 2/m

71.2.2c.7 Ganterite! [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 C 2/c 2/m

71.2.2c.8 IMA2004-013! (Ba,K)(Mg,Fe,Ti)3(Si,Al)4O10O2 C 2/m 2/m

Strunz Class:

VIII/H.12-60 VIII - Silicates

VIII/H - Phyllosilicates (layered) Mica like layered silicates with [Si4O10]4- and related groups

VIII/H.12 - Mica group, Lepidolite series

VIII/H.12-10 Anandite (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2 C 2/m 2/m

VIII/H.12-20 Bityite CaLiAl2(AlBeSi2)O10(OH)2 C 2/c 2/m

VIII/H.12-30 Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 C 2/m 2/m

VIII/H.12-35 Ferrokinoshitalite! (Ba,K)(Fe,Mg)3(Si2Al2)O10(OH,F)2 C 2/m 2/m

VIII/H.12-40 Margarite CaAl2(Al2Si2)O10(OH)2 C 2/c 2/m

VIII/H.12-50 Chernykhite (Ba,Na)V,Al)2(Si,Al)4O10(OH)2 C 2/c 2/m

VIII/H.12-60 Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 C 2/m 2/m

Other Clintonite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)

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 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - HyperPhysics
11 - MinDAT
12 - MinMax(Deutsch)
13 - MinMax(English)
14 - Mineralienatlas (Deutsch)
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

Search for Clintonite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Clintonite :

AA Mineral Specimens

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

MineralsWeb Fine Minerals

The GeoZone

Wrights Rock Shop

Translate Clintonite Mineral Data :

Ask about Clintonite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Clintonite

Ca(Mg,Al)3(Al3Si)O10(OH)2
Dana No: 71.2.2c.2 Strunz No: VIII/H.12-60
Locality:

Notes: