Mineralogy Database

Potassiccarpholite Mineral Data

Search Webmineral :
  
Advertisment

General Potassiccarpholite Information

Help on Chemical  Formula: Chemical Formula: (K,Na,[ ])(Li,Mn++)2Al)4Si4O12(OH)4(F,OH)4
Help on Composition: Composition: Molecular Weight = 656.83 gm
   Potassium   3.33 %  K     4.02 % K2O
   Sodium      0.39 %  Na    0.52 % Na2O
   Lithium     0.63 %  Li    1.36 % Li2O
   Manganese  10.54 %  Mn   13.61 % MnO
   Aluminum   15.82 %  Al   29.88 % Al2O3
   Iron        1.11 %  Fe    1.42 % FeO
   Silicon    17.45 %  Si   37.32 % SiO2
   Hydrogen    0.82 %  H     7.36 % H2O
   Oxygen     42.31 %  O
   Fluorine    7.61 %  F     7.61 % F
                -   %   F    -3.20 % -O=F2    
             ______        ______ 
             100.00 %       99.90 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.56Na0.11Mn2+1.26Fe2+0.13Li0.6Al3.85Si4.08O12(OH)4F2.63(OH)1.37
Help on Environment: Environment: Miarolitic cavities in an anorogenic Tertiary granite pluton. Carpholite group
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Fall Creek drainage, in the vicinity of Glens Peak, Boise County, Idaho (corrected from Sawtooth Batholith location). Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the potassium-dominant member of carpholite.
Help on Synonym: Synonym: IMA2002-064
  Potassic-carpholite - Renamed Potassiccarpholite by Mineralogical Record, v39 (2008), p131
 

Potassiccarpholite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image

  Potassiccarpholite

Comments: Tan prismatic crystal sprays of potassic-carpholite to about 2mm in matrix.
Location: Sawtooth Batholith, near Centerville, Boise Co., Idaho, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Potassiccarpholite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6755:1:0.253
Help on Cell Dimensions: Cell Dimensions: a = 13.715, b = 20.302, c = 5.138, Z = 4; V = 1,430.63 Den(Calc)= 3.05
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C cca
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.613(1)(351), 5.705(1)(220), 3.048(0.9)(331),1.467(0.8), 2.05(0.8)(621), 2.744(0.8)(421), 3.433(0.8)(400), 3.819(0.8)(221),
 

Physical Properties of Potassiccarpholite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: White, Straw yellow.
Help on Density: Density: 3.08
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Irregular - Very brittle fracture producing irregular fragments
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Tuft - Cottony aggragate of very fine, acicular crystals
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Silky
Help on Streak: Streak: white
 

Optical Properties of Potassiccarpholite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.092 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.083 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1932,KPDmeas= 0.1913,KC= 0.2106
Ncalc = 1.64 - 1.65
Help on Optical Data: Optical Data: Biaxial (-), a=1.578, b=1.592, g=1.598, bire=0.0200
 

Calculated Properties of Potassiccarpholite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.01 gm/cc
note: Specific Gravity of Potassiccarpholite =3.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0090654006
Boson Index = 0.9909345994
Help on Photoelectric: Photoelectric: PEPotassiccarpholite = 4.51 barns/electron
U=PEPotassiccarpholite x relectron= 13.55 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 47.41 (Gamma Ray American Petroleum Institute Units)
Concentration of Potassiccarpholite per GRapi unit = 2.11 (%)

Estimated Radioactivity from Potassiccarpholite - barely detectable

 

Potassiccarpholite Classification

Help on  Dana Class: Dana Class: 65.01.05.05 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.01)with chains P=2
  (65.01.05)Carpholite group
 
65.01.05.01 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
65.01.05.02 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
65.01.05.03 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
65.01.05.04 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m
 
65.01.05.05 Potassiccarpholite! (K,Na,[])(Li,Mn)2Al)4Si4O12(OH)4(F,OH)4 C cca 2/m 2/m 2/m
 
65.01.05.06 Vanadiocarpholite! MnVAl(Si2O6)(OH)4 C cca 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DB.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DB -Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
 
09.DB.05 Carpholite MnAl2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
09.DB.05 Balipholite BaMg2LiAl3Si4O12(OH,F)8 C cca 2/m 2/m 2/m
 
09.DB.05 Ferrocarpholite (Fe,Mg)Al2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
09.DB.05 Magnesiocarpholite MgAl2Si2O6(OH)4 C cca 2/m 2/m 2/m
 
09.DB.05 Potassiccarpholite! (K,Na,[])(Li,Mn)2Al)4Si4O12(OH)4(F,OH)4 C cca 2/m 2/m 2/m
 
09.DB.05 Vanadiocarpholite! MnVAl(Si2O6)(OH)4 C cca 2/m 2/m 2/m
 

Other Potassiccarpholite Information

Help on References: References: NAME( CanMin, v 42, p 121) PHYS. PROP.(CanMin, v 42, p 121) OPTIC PROP.(CanMin, v 42, p 121)
Help on See Also: See Also: Links to other databases for Potassiccarpholite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Potassiccarpholite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Potassiccarpholite :

Ask about Potassiccarpholite 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 Espaņol

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

Potassiccarpholite

(K,Na,[ ])(Li,Mn++)2Al)4Si4O12(OH)4(F,OH)4
Dana No: 65.01.05.05 Strunz No: 09.DB.05
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.