General Potassicarfvedsonite Information Chemical Formula: |
KNa2Fe++4Fe+++Si8O22(OH)2 |
Composition: |
Molecular Weight = 962.95 gm |
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Potassium 2.72 % K 3.28 % K2O |
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Sodium 5.18 % Na 6.98 % Na2O |
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Lithium 0.21 % Li 0.45 % Li2O |
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Calcium 0.21 % Ca 0.29 % CaO |
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Magnesium 0.03 % Mg 0.04 % MgO |
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Titanium 0.25 % Ti 0.41 % TiO2 |
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Manganese 1.08 % Mn 1.40 % MnO |
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Aluminum 0.31 % Al 0.58 % Al2O3 |
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Zinc 0.14 % Zn 0.17 % ZnO |
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Iron 27.14 % Fe 24.55 % FeO / 11.53 % Fe2O3 |
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Silicon 22.63 % Si 48.42 % SiO2 |
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Hydrogen 0.19 % H 1.69 % H2O |
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Oxygen 39.56 % O |
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Fluorine 0.36 % F 0.36 % F |
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- %
F -0.15 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
K0.67Na0.22Na1.95Ca0.05Fe2+3.29Fe3+1.26Li0.29Mn2+0.19Ti0.05Zn0.02Mg0.01Si7.76
Fe3+0.13Al0.11O22OH1.81F0.18 |
Environment: |
Alkaline pegmatites in agpaitic complexe Ilímaussaq (Greenland). Amphibole group |
IMA Status: |
Approved IMA 2003 (Dana # Added) |
Locality: |
Ilímaussaq complex, Greenland. Link to MinDat.org Location Data. |
Name Origin: |
Named as the K-dominant analogue of arfvedsonite. |
Synonym: |
IMA2003-043 |
| | Search for Potassicarfvedsonite Images
Images:
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| | Potassicarfvedsonite Crystallography Axial Ratios: |
a:b:c =0.554:1:0.2946 |
Cell Dimensions: |
a = 10.002, b = 18.054, c = 5.319, Z = 2; beta = 103.9° V = 932.36 Den(Calc)= 3.43 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
X Ray Diffraction: |
By Intensity(I/Io): 8.53(1)(110), 3.184(0.4)(310), 9.02(0.28)(020),3.303(0.23)(240), 2.847(0.17)(330), 3.419(0.12)(131), 2.725(0.1)(151), |
Crystal Structure:
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Mouse
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| Physical Properties of Potassicarfvedsonite Cleavage: |
{110} Perfect, {110} Perfect |
Color: |
Bluish gray, Dark blue green. |
Diaphaneity: |
Translucent to transparent |
Fracture: |
Brittle - Splintery - Brittle fracture leaving splintery fragments. |
Habit: |
Acicular - Occurs as needle-like crystals. |
Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
Hardness: |
5.5-6 - Knife Blade-Orthoclase |
Luster: |
Vitreous (Glassy) |
Streak: |
pale blue |
| Optical Properties of Potassicarfvedsonite Gladstone-Dale: |
CI calc= 0.07 (Fair) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.2016,KC= 0.2167 Ncalc = 1.74 Optical Data: |
Biaxial (-), a=1.683, b=1.692, g=1.699, bire=0.0160, 2V(Calc)=82, 2V(Meas)=>60. Dispersion strong, r > v. |
| Calculated Properties of Potassicarfvedsonite Electron Density: |
Bulk Density (Electron Density)=3.35 gm/cc |
note: Specific Gravity of Potassicarfvedsonite =3.43 gm/cc. Fermion Index: |
Fermion Index = 0.01 |
Boson Index = 0.99 Photoelectric: |
PEPotassicarfvedsonite = 9.73 barns/electron |
U=PEPotassicarfvedsonite x relectron= 32.63 barns/cc. Radioactivity: |
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GRapi = 38.36 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Potassicarfvedsonite - barely detectable | Potassicarfvedsonite Classification Dana Class: |
66.01.03c.09b (66)Inosilicate Double-Width Unbranched Chains, W=2 |
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(66.01)with P=2 amphibole configuration |
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(66.01.03c)Group 4, the sodic amphiboles |
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Strunz Class: |
09.DE.25 09 - SILICATES (Germanates) |
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09.D - Inosilicates* Structural terminology according to Liebau (1985) |
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09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family |
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| Other Potassicarfvedsonite Information References: |
NAME( AmMin, v90, p1437) PHYS. PROP.(AmMin, v90, p1437) OPTIC PROP.(AmMin, v90, p1437) |
See Also: |
Links to other databases for Potassicarfvedsonite : |
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 Potassicarfvedsonite using: Visit our Advertisers for Potassicarfvedsonite : A Bijoux Google Search for PotassicarfvedsoniteAdam's Minerals Google Search for Potassicarfvedsonite Cape Minerals Google Search for Potassicarfvedsonite Dakota Matrix Minerals Google Search for Potassicarfvedsonite Excalibur Mineral Corp. Google Search for Potassicarfvedsonite Exceptional Minerals Google Search for Potassicarfvedsonite John Betts Fine Minerals Search for Potassicarfvedsonite McDougall Minerals Google Search for Potassicarfvedsonite Mineral News Website Link Rock and Mineral Shows Google Search for Potassicarfvedsonite Weinrich Minerals, Inc. Google Search for Potassicarfvedsonite Ask about Potassicarfvedsonite here : Print or Cut-and-Paste your Potassicarfvedsonite Specimen Label here :
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