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Långban, Filipstad, Värmland, Sweden
© Ulf Nyberg
|Name:||Named in 1955 by Clifford Frondel in honor of Forest A. Gonyer [March 24, 1899 - December 1971 Merry Point, Virginia, USA] chemist in the Mineralogy department, Harvard University. Gonyer named many new mineral species or chemically analyzed them without co-authorship including dakeite, roweite, and salesite.|
This page provides mineralogical data about Gonyerite.
Classification of Gonyerite
|IMA status:||Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"|
|Strunz 8th edition ID:||8/H.23-80|
|Nickel-Strunz 10th (pending) edition ID:||9.EC.55|
9 : SILICATES (Germanates)
E : Phyllosilicates
C : Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
|Dana 8th edition ID:||126.96.36.199|
71 : PHYLLOSILICATES Sheets of Six-Membered Rings
4 : Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
|Hey's CIM Ref.:||14.18.10|
14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe
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Type Occurrence of Gonyerite
|Type Locality:||Långban, Filipstad, Värmland, Sweden|
|Year of Discovery:||1955|
Physical Properties of Gonyerite
Optical Data of Gonyerite
|RI values:||nα = 1.646 nβ = 1.664 nγ = 1.664|
|Maximum Birefringence:||δ = 0.018|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Dispersion:||r > v strong|
Chemical Properties of Gonyerite
|Essential elements:||Fe, H, Mn, O, Si|
|All elements listed in formula:||Fe, H, Mg, Mn, O, Si|
Relationship of Gonyerite to other Species
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Gonyerite
|Health Warning:||No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.|
References for Gonyerite
American Mineralogist: 40: 1090-1094.
Internet Links for Gonyerite
Localities for Gonyerite
The 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. ? 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.
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Locality Updated: Tresminas Mines, Tresminas, Vila Pouca de Aguiar, Vila Real District, PortugalFrom Rui Nunes, 12th Dec 2013 13:01:28