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About BrindleyiteHide

George W. Brindley
Dark yellow-green
2½ - 3
Specific Gravity:
Crystal System:
Originally named nimesite by Z. Maksimovic in 1972 but the name was not approved by the IMA due to its similarity to the similar mineral nimite. It was renamed by Maksimovic and David L. Bish in 1978 in honor of George William Brindley (19 June 1905, Stoke-on-Trent, England - 23 October 1983), Professor of Mineral Science, Pennsylvania State University, University Park, Pennsylvania, USA. He was an expert on clay minerals and won the 1970 Roebling Medal.
Kaolinite-Serpentine group.

Classification of BrindleyiteHide

First Published:

9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers

16 : Silicates Containing Aluminum and other Metals
25 : Aluminosilicates of Ni

Physical Properties of BrindleyiteHide

Dark yellow-green
2½ - 3 on Mohs scale
3.17 g/cm3 (Measured)    3.16 g/cm3 (Calculated)

Optical Data of BrindleyiteHide

r > v

Chemical Properties of BrindleyiteHide

Common Impurities:

Crystallography of BrindleyiteHide

Crystal System:
Cell Parameters:
a = 5.28 Å, b = 9.13 Å, c = 7.31 Å
β = 104.25°
a:b:c = 0.578 : 1 : 0.801
Unit Cell V:
341.55 ų (Calculated from Unit Cell)

Type Occurrence of BrindleyiteHide

General Appearance of Type Material:
Green coatings to 12 mm thick on limestone. It has a clayey appearance, but often is compact with a pronounced schistosity and lustrous surface.
Place of Conservation of Type Material:
Department of Mineralogy, University of Belgrade, Belgrade, Yugoslavia.
National Museum of Natural History, Washington, D.C., USA, 136982.
Geological Setting of Type Material:
Coating on limestone and veinlets cutting kaolinitic clays at the base of a bauxite deposit developed on karst.

Synonyms of BrindleyiteHide

Other Language Names for BrindleyiteHide

Relationship of Brindleyite to other SpeciesHide

Other Members of this group:
AmesiteMg2Al(AlSiO5)(OH)4Tric. 1 : P1
AntigoriteMg3(Si2O5)(OH)4Mon. m : Bm
Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4Mon. m : Bm
CronstedtiteFe2+2Fe3+((Si,Fe3+)2O5)(OH)4Trig. 3m : P3 1m
GuidottiiteMn2Fe3+(Fe3+SiO5)(OH)4Hex. 6 : P63
KellyiteMn2+2Al(AlSiO5)(OH)4Hex. 6 : P63
LizarditeMg3(Si2O5)(OH)4Trig. 3m : P3 1m

Related Minerals - Nickel-Strunz GroupingHide

9.ED.ClinochrysotileMon. 2/m
9.ED.05DickiteAl2(Si2O5)(OH)4Mon. m : Bb
9.ED.05KaoliniteAl2(Si2O5)(OH)4Tric. 1 : P1
9.ED.05NacriteAl2(Si2O5)(OH)4Mon. m : Bb
9.ED.05Odinite(Fe,Mg,Al,Fe,Ti,Mn)2.4((Si,Al)2O5)(OH)4Mon. m : Bm
9.ED.10HalloysiteAl2(Si2O5)(OH)4Mon. m : Bb
9.ED.10HisingeriteFe3+2(Si2O5)(OH)4 · 2H2OMon.
9.ED.10Halloysite-7ÅAl2(Si2O5)(OH)4Mon. m : Bb
9.ED.15AmesiteMg2Al(AlSiO5)(OH)4Tric. 1 : P1
9.ED.15AntigoriteMg3(Si2O5)(OH)4Mon. m : Bm
9.ED.15Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4Mon. m : Bm
9.ED.15CronstedtiteFe2+2Fe3+((Si,Fe3+)2O5)(OH)4Trig. 3m : P3 1m
9.ED.15KellyiteMn2+2Al(AlSiO5)(OH)4Hex. 6 : P63
9.ED.15LizarditeMg3(Si2O5)(OH)4Trig. 3m : P3 1m
9.ED.15GuidottiiteMn2Fe3+(Fe3+SiO5)(OH)4Hex. 6 : P63
9.ED.20Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2OAmor.
9.ED.20ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2OOrth.
9.ED.20Neotocite(Mn,Fe,Mg)SiO3 · H2OAmor.
9.ED.25BismutoferriteFe3+2Bi(SiO4)2(OH)Mon. m : Bm
9.ED.25ChapmaniteFe3+2Sb3+(Si2O5)O3(OH)Mon. m : Bm

Related Minerals - Dana Grouping (8th Ed.)Hide

71.1.2c.1AmesiteMg2Al(AlSiO5)(OH)4Tric. 1 : P1
71.1.2c.2Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4Mon. m : Bm
71.1.2c.5KellyiteMn2+2Al(AlSiO5)(OH)4Hex. 6 : P63

Related Minerals - Hey's Chemical Index of Minerals GroupingHide


Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for BrindleyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Maksimovic, Z. (1972) Nimesite, a new septechlorite from a bauxite deposit near Magara, Greece. Bull. Sci. Cons. Acad. Sci. Arts R. S. F. Yusoslav. Sect. A: 17: 224-226.
Fleischer, M. (1973) New mineral names. American Mineralogist: 58: 1111-1115.
Maksimovic, Z., Bish, D.L. (1978) Brindleyite, a nickel-rich aluminous serpentine mineral analogous to berthierine. American Mineralogist: 63: 484-489.
Wiewióra, A. (1990) Crystallochemical classifications of phyllosilicates based on the unified system of projection of chemical composition: III. The serpentine-kaolin group. Clay Minerals: 25: 93-98.

Internet Links for BrindleyiteHide

Localities for BrindleyiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Greece (TL)
  • Attica
    • West Attica
      • Megara
Amer.Min. (1978) 63, 484-489
  • Oshikoto Region
    • Tsumeb
Analyzed by Joy Desor.
  • New Mexico
    • Luna Co.
Handbook of Mineralogy (2001)
Mineral and/or Locality  
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