Mineralogy Database

Kellyite Mineral Data

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General Kellyite Information

Help on Chemical  Formula: Chemical Formula: (Mn++,Mg,Al)3(Si,Al)2O5(OH)4
Help on Composition: Composition: 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
Help on Empirical Formula: Empirical Formula: Mn2+1.5MgAl0.5Si1.5Al0.5O5(OH)4
Help on Environment: Environment: Metamorphic Mn deposit with other Mn-silicates.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: Bald Knob, Sparta, Alleghany County, North Carolina, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for William Crowley Kelley (1929-), American geologist, University of Michigan.
Help on Name Pronunciation: Name Pronunciation: Kellyite Say KELLYITE
 

Kellyite Image

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  Kellyite

Comments: Light-yellow irregular to platy tablets of kellyite in matrix.
Location: Near Bald Knob, Alleghany County, North Carolina, USA. Scale: See Image.
© Rruff Database

Kellyite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.62528
Help on Cell Dimensions: Cell Dimensions: a = 5.348, c = 14.04, Z = 2; V = 347.76 Den(Calc)= 3.09
Help on Crystal System: Crystal System: Hexagonal - Pyramidal H-M Symbol (6) Space Group: P 63
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.535(1), 3.502(0.85), 7(0.85),
 

Physical Properties of Kellyite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Golden yellow, Lemon yellow.
Help on Density: Density: 3.07
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.
Help on Habit: Habit: Micaceous - Platy texture with "flexible" plates.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Resinous
Help on Streak: Streak: yellowish white
 

Optical Properties of Kellyite

Help on Dichroism (e): Dichroism (e): colorless or greenish yellow.
Help on Dichroism (w): Dichroism (w): pale yellow or reddish brown.
Help on Gladstone-Dale: Gladstone-Dale: 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
Help on Optical Data: Optical Data: Uniaxial (-), e=1.639, w=1.646, bire=0.0070.
 

Calculated Properties of Kellyite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.02 gm/cc
note: Specific Gravity of Kellyite =3.07 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEKellyite = 7.33 barns/electron
U=PEKellyite x rElectron Density= 22.17 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kellyite is Not Radioactive
 

Kellyite Classification

Help on  Dana Class: Dana Class: 71.01.02c.05 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.01)with 1:1 layers
  (71.01.02c)Serpentine group (Amesite subgroup)
 
71.01.02c.01 Amesite Mg2Al(SiAl)O5(OH)4 C1 1
 
71.01.02c.02 Berthierine (Fe,Fe,Al,Mg)2-3(Si,Al)2O5(OH)4 Cm m
 
71.01.02c.03 Brindleyite (Ni,Mg,Fe)2Al(SiAl)O5(OH)4 C 2 2
 
71.01.02c.04 Fraipontite (Zn,Al)3(Si,Al)2O5(OH)4 Cm m
 
71.01.02c.05 Kellyite (Mn,Mg,Al)3(Si,Al)2O5(OH)4 P 63 6
 
71.01.02c.06 Manandonite Li2Al4[(Si2AlB)O10](OH)8 C1 1
 
71.01.02c.07 Cronstedtite Fe2Fe(SiFe)O5(OH)4 P 31m 3m
Help on  Strunz Class: Strunz Class: 09.ED.15 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.ED -Phyllosilicates with kaolinite layers
 
09.ED.15 Clinochrysotile? Mg3Si2O5(OH)4 Cc, C 2/m Mono
 
09.ED.15 Berthierine (Fe,Fe,Al,Mg)2-3(Si,Al)2O5(OH)4 Cm m
 
09.ED.15 Brindleyite (Ni,Mg,Fe)2Al(SiAl)O5(OH)4 C 2 2
 
09.ED.15 Amesite Mg2Al(SiAl)O5(OH)4 C1 1
 
09.ED.15 Antigorite (Mg,Fe)3Si2O5(OH)4 Cm m
 
09.ED.15 Caryopilite (Mn,Mg,Zn,Fe)3(Si,As)2O510(OH,Cl)4 Cm or C 2/m Mono
 
09.ED.15 Fraipontite (Zn,Al)3(Si,Al)2O5(OH)4 Cm m
 
09.ED.15 Cronstedtite Fe2Fe(SiFe)O5(OH)4 P 31m 3m
 
09.ED.15 Chrysotile Mg3Si2O5(OH)4 A2/m 2/m
 
09.ED.15 Nepouite Ni3Si2O5(OH)4 Ccm21 mm2
 
09.ED.15 Greenalite (Fe,Fe)2-3Si2O5(OH)4 Unk Mono
 
09.ED.15 Kellyite (Mn,Mg,Al)3(Si,Al)2O5(OH)4 P 63 6
 
09.ED.15 Maufite? (Mg,Ni)Al4Si3O13•4(H2O)(?) Mono ? Mono
 
09.ED.15 Lizardite Mg3Si2O5(OH)4 P1 1
 
09.ED.15 Orthochrysotile? Mg3Si2O5(OH)4 Unk Ortho
 
09.ED.15 Manandonite Li2Al4[(Si2AlB)O10](OH)8 C1 1
 
09.ED.15 Pecoraite Ni3Si2O5(OH)4 C 2/m 2/m
 
09.ED.15 Parachrysotile? Mg3Si2O5(OH)4 Unk Ortho
 

Other Kellyite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: 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

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

Kellyite

(Mn++,Mg,Al)3(Si,Al)2O5(OH)4
Dana No: 71.01.02c.05 Strunz No: 09.ED.15
Locality:

 

Notes:

 

 
   
 


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