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Kellyite Mineral Data |
General Kellyite Information |
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(Mn++,Mg,Al)3(Si,Al)2O5(OH)4 | ||
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Molecular Weight = 323.85 gm | ||
Magnesium 7.51 % Mg 12.45 % MgO | |||
Manganese 25.45 % Mn 32.86 % MnO | |||
Aluminum 8.33 % Al 15.74 % Al2O3 | |||
Silicon 13.01 % Si 27.83 % SiO2 | |||
Hydrogen 1.24 % H 11.13 % H2O | |||
Oxygen 44.46 % O | |||
______ ______ | |||
100.00 % 100.00 % = TOTAL OXIDE | |||
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Mn2+1.5MgAl0.5Si1.5Al0.5O5(OH)4 | ||
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Metamorphic Mn deposit with other Mn-silicates. | ||
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Approved IMA 1974 | ||
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Bald Knob, Sparta, Alleghany County, North Carolina, USA. Link to MinDat.org Location Data. | ||
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Named for William Crowley Kelley (1929-), American geologist, University of Michigan. | ||
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Kellyite ![]() |
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Kellyite Image | |||
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Kellyite Crystallography |
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a:c = 1:2.62528 | ||
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a = 5.348, c = 14.04, Z = 2; V = 347.76 Den(Calc)= 3.09 | ||
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Hexagonal - Pyramidal H-M Symbol (6) Space Group: P 63 | ||
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By Intensity(I/Io): 2.535(1), 3.502(0.85), 7(0.85), | ||
Physical Properties of Kellyite |
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{001} Perfect | ||
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Golden yellow, Lemon yellow. | ||
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3.07 | ||
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Transparent | ||
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Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape. | ||
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Micaceous - Platy texture with "flexible" plates. | ||
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Tabular - Form dimensions are thin in one direction. | ||
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2.5 - Finger Nail | ||
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Vitreous - Resinous | ||
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yellowish white | ||
Optical Properties of Kellyite |
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colorless or greenish yellow. | ||
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pale yellow or reddish brown. | ||
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CI meas= 0.04 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.046 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2079,KPDmeas= 0.2093,KC= 0.2179 Ncalc = 1.67 |
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Uniaxial (-), e=1.639, w=1.646, bire=0.0070. | ||
Calculated Properties of Kellyite |
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Bulk Density (Electron Density)=3.02 gm/cc note: Specific Gravity of Kellyite =3.07 gm/cc. |
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Fermion Index = 0.01 Boson Index = 0.99 |
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PEKellyite = 7.33 barns/electron U=PEKellyite x rElectron Density= 22.17 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kellyite is Not Radioactive |
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Kellyite Classification |
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71.01.02c.05 (71)Phyllosilicate Sheets of Six-Membered Rings | ||
(71.01)with 1:1 layers | |||
(71.01.02c)Serpentine group (Amesite subgroup) | |||
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09.ED.15 09 - SILICATES (Germanates) | ||
09.E - Phyllosilicates | |||
09.ED -Phyllosilicates with kaolinite layers | |||
Other Kellyite Information |
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NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | ||
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Links to other databases for Kellyite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Athena 5 - EUROmin Project 6 - Ecole des Mines de Paris 7 - GeoScienceWorld 8 - Google Images 9 - Google Scholar 10 - Handbook of Mineralogy (MinSocAm) 11 - Handbook of Mineralogy (UofA) 12 - MinDAT 13 - Mineralienatlas (Deutsch) 14 - Online Mineral Museum 15 - QUT Mineral Atlas 16 - Ruff.Info Search for Kellyite using: Visit our Advertisers for Kellyite : Ask about Kellyite here : Print or Cut-and-Paste your Kellyite Specimen Label here :
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