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Brindleyite

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George W. Brindley
Formula:
(Ni,Al)3(Si,Al)2O5(OH)4
System:
Monoclinic
Colour:
Dark yellow-green
Hardness:
2½ - 3
Name:
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 Brindleyite

Approved
First Published:
1972
8/H.27-170
9.ED.15

9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets
71.1.2c.3

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers
16.25.1

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

Physical Properties of Brindleyite

Colour:
Dark yellow-green
Hardness (Mohs):
2½ - 3
Density:
3.17 g/cm3 (Measured)    3.16 g/cm3 (Calculated)

Optical Data of Brindleyite

Type:
Biaxial
Dispersion:
r > v

Chemical Properties of Brindleyite

Formula:
(Ni,Al)3(Si,Al)2O5(OH)4
Elements listed in formula:
Common Impurities:
Mg,Fe,Ti,La,Cr,Ca

Crystallography of Brindleyite

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

Type Occurrence of Brindleyite

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 depsoit developed on karst.
Empirical Formula:
(Ni,Al)3(Si,Al)2O5(OH)4

Relationship of Brindleyite to other Species

Other Members of Group:
AmesiteMg2Al(AlSiO5)(OH)4
AntigoriteMg3(Si2O5)(OH)4
Baumite(Mg,Al,Mn,Zn,Fe)3(Si,Al)2O5(OH)4
Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4
CaryopiliteMn32+Si2O5(OH)4
ChrysotileMg3(Si2O5)(OH)4
CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
Fraipontite(Zn,Al)3((Si,Al)2O5)(OH)4
KellyiteMn22+Al(AlSiO5)(OH)4
LizarditeMg3(Si2O5)(OH)4
Népouite(Ni,Mg)3(Si2O5)(OH)4
PecoraiteNi3(Si2O5)(OH)4
9.ED.Clinochrysotile
9.ED.05DickiteAl2(Si2O5)(OH)4
9.ED.05KaoliniteAl2(Si2O5)(OH)4
9.ED.05NacriteAl2(Si2O5)(OH)4
9.ED.05Odinite(Fe,Mg,Al,Fe,Ti,Mn)2.4((Si,Al)2O5)(OH)4
9.ED.10HalloysiteAl2(Si2O5)(OH)4
9.ED.10HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
9.ED.10Halloysite-7ÅAl2(Si2O5)(OH)4
9.ED.15AmesiteMg2Al(AlSiO5)(OH)4
9.ED.15AntigoriteMg3(Si2O5)(OH)4
9.ED.15Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4
9.ED.15CaryopiliteMn32+Si2O5(OH)4
9.ED.15ChrysotileMg3(Si2O5)(OH)4
9.ED.15CronstedtiteFe22+Fe3+((Si,Fe3+)2O5)(OH)4
9.ED.15Fraipontite(Zn,Al)3((Si,Al)2O5)(OH)4
9.ED.15Greenalite(Fe2+,Fe3+)2-3Si2O5(OH)4
9.ED.15KellyiteMn22+Al(AlSiO5)(OH)4
9.ED.15LizarditeMg3(Si2O5)(OH)4
9.ED.15ManandoniteLi2Al4(Si2AlB)O10(OH)8
9.ED.15Népouite(Ni,Mg)3(Si2O5)(OH)4
9.ED.15PecoraiteNi3(Si2O5)(OH)4
9.ED.15GuidottiiteMn2Fe3+(Fe3+SiO5)(OH)4
9.ED.20Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
9.ED.20ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
9.ED.20ImogoliteAl2SiO3(OH)4
9.ED.20Neotocite(Mn,Fe,Mg)SiO3 · H2O
9.ED.25BismutoferriteFe23+Bi(SiO4)2(OH)
9.ED.25ChapmaniteFe23+Sb3+(Si2O5)O3(OH)
16.25.2Nimite(Ni,Mg,Al)6((Si,Al)4O10)(OH)8
16.25.3Maufite

Other Names for Brindleyite

Name in Other Languages:

Other Information

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 Brindleyite

Reference List:
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 Brindleyite

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https://www.mindat.org/min-774.html
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Localities for Brindleyite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Greece (TL)
 
  • Attikí Prefecture (Attica; Attika)
    • Western Attikí District
      • Megara
Amer.Min. (1978) 63, 484-489
USA
 
  • New Mexico
    • Luna Co.
Handbook of Mineralogy (2001)
Mineral and/or Locality  
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