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Brindleyite Mineral Data

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General Brindleyite Information

Help on Chemical  Formula: Chemical Formula: (Ni,Mg,Fe++)2Al(SiAl)O5(OH)4
Help on Composition: Composition: Molecular Weight = 340.29 gm
   Magnesium   1.43 %  Mg    2.37 % MgO
   Aluminum   15.86 %  Al   29.96 % Al2O3
   Iron        1.64 %  Fe    2.11 % FeO
   Silicon     8.25 %  Si   17.66 % SiO2
   Nickel     29.32 %  Ni   37.31 % NiO
   Hydrogen    1.18 %  H    10.59 % H2O
   Oxygen     42.31 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni1.7Mg0.2Fe2+0.1Al2SiO5(OH)4
Help on Environment: Environment: As coatings on clays and as veinlets cutting kaolinitic clay at the base of a bauxite deposit developed on karst.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Marmara bauxite deposit, Begara, Greece. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Name for Dr. George William Brindley (1905-1983), Professor of Mineral Sciences, Pennsylvania State University, University Park, Pennsylvania, USA.
Help on Name Pronunciation: Name Pronunciation: Brindleyite + Pronunciation Say BRINDLEYITE
Help on Synonym: Synonym: Nimesite
 

Brindleyite Image

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  Brindleyite

Comments: Greenish waxy crust of brindleyite.
Location: Hachita, Grant County, New Mexico, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Brindleyite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5787:1:0.8003
Help on Cell Dimensions: Cell Dimensions: a = 5.286, b = 9.133, c = 7.31, Z = 2; beta = 104.15° V = 342.20 Den(Calc)= 3.30
Help on Crystal System: Crystal System: Monoclinic - Sphenoidal H-M Symbol (2) Space Group: C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.07(1), 3.54(0.81), 2.48(0.18),2.62(0.18), 1.524(0.17), 4.54(0.1),
 

Physical Properties of Brindleyite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow green.
Help on Density: Density: 3.17
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: light green
 

Optical Properties of Brindleyite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.042 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.08 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1924,KPDmeas= 0.2003,KC= 0.2091
Ncalc = 1.66 - 1.69
Help on Optical Data: Optical Data: Biaxial (?), b=1.635
 

Calculated Properties of Brindleyite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.14 gm/cc
note: Specific Gravity of Brindleyite =3.17 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0091487033
Boson Index = 0.9908512967
Help on Photoelectric: Photoelectric: PEBrindleyite = 12.81 barns/electron
U=PEBrindleyite x rElectron Density= 40.24 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Brindleyite is Not Radioactive
 

Brindleyite Classification

Help on  Dana Class: Dana Class: 71.01.02c.03 (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 Brindleyite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Brindleyite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Brindleyite

(Ni,Mg,Fe++)2Al(SiAl)O5(OH)4
Dana No: 71.01.02c.03 Strunz No: 09.ED.15
Locality:

 

Notes:

 

 
   
 


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