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Pimelite

Formula:
Ni
 
3
Si
 
4
O
 
10
(OH)
 
2
·4H
 
2
O
System:HexagonalColour:Bright green, apple ...
Lustre:Greasy, DullHardness:
Name:Named for the Greek word for "fat", in allusion to the mineral's appearance.


Pyrophyllite-Talc Group

Discredited as a species although the name has historical precedence(?).
Probably willemseite or "kerolite".

Classification of Pimelite

IMA status:Discredited 2006
Strunz 8th edition ID:8/H.09-65

8 : Silicates
H : Phyllosilicates (layered), Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others
09 : Talc series
Dana 8th edition ID:71.3.1b.5

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
3 : Sheets of 6-membered rings with 2:1 clays
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Physical Properties of Pimelite

Lustre:Greasy, Dull
Diaphaneity (Transparency):Translucent
Colour:Bright green, apple green, yellow-green
Streak:White
Hardness (Mohs):

Crystallography of Pimelite

Crystal System:Hexagonal

Optical Data of Pimelite

Type:Biaxial (-)
RI values: nα = 1.592 nγ = 1.615
2V:Measured: 30° to 80°
Maximum Birefringence:δ = 0.023

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:none

Chemical Properties of Pimelite

Formula:
Ni
 
3
Si
 
4
O
 
10
(OH)
 
2
·4H
 
2
O
Essential elements:H, Ni, O, Si
All elements listed in formula:H, Ni, O, Si

Relationship of Pimelite to other Species

Related Minerals - Strunz Grouping):

- +
8/H.09-10Pyrophyllite
Al
 
2
Si
 
4
O
 
10
(OH)
 
2
8/H.09-20Ferripyrophyllite
Fe
 
2
Si
 
4
O
 
10
(OH)
 
2
8/H.09-30Macaulayite
(Fe,Al)
 
24
Si
 
4
O
 
43
(OH)
 
2
8/H.09-40Talc
Mg
 
3
Si
 
4
O
 
10
(OH)
 
2
8/H.09-50Minnesotaite
(Fe,Mg)
 
3
Si
 
4
O
 
10
(OH)
 
2
8/H.09-60Willemseite
(Ni,Mg)
 
3
Si
 
4
O
 
10
(OH)
 
2
8/H.09-70Kegelite
Pb
 
12
(Zn,Fe)
 
2
Al
 
4
(SO
 
4
)
 
4
Si
 
11
O
 
38
or near

Other Names for Pimelite

Other Languages:
German:Pimelit
Spanish:Pimelita

Other Information

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 Pimelite

Reference List:American Mineralogist (1985): 70: 549.

Clays and Clay Minerals (1987): 35: 1.

Burke, Ernest A.J. (2007) A Mass Discreditation of GQN Minerals. Canadian Mineralogist: 44(6): 1557-1560.

Internet Links for Pimelite

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    Localities for Pimelite

    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.
    Colombia
     
    • Córdoba Department
      • Montelíbano
    Econ Geol (2004) 99:1197-1213
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • South Bohemia Region
        • České Budějovice (Budweis)
    Čech, V., Koutek, J.: Geologické a genetické poměry ložisek železné a niklové rudy u Křemže v jižních Čechách. Sborník St. geol. úst. ČSR, 1946, sv. 13,
    • Moravia (Mähren; Maehren)
      • Vysočina Region
        • Bystřice nad Pernštejnem
    Pelíšek, J.: Ni-nerosty v serpentinitu západní Moravy. Časopis pro mineralogii a geologii, 1987, roč. 32, č. 2, s. 207.
    Kazakhstan
     
    • Qaraghandy Oblysy (Karaganda Oblast')
      • Karkaralinsk Rayon
        • Karkaralinsk (Qarqaraly; Karsakpaj; Qarsaqpaj; Kaskelen)
    Gaines et al. 1997, Dana\'s System of Mineralogy
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azzer District
    Eur. J. Mineral. , 1993, 5, pp. 1205-1215.
    New Caledonia
     
    • Northern Province
      • Nouméa Commune
    Gaines et al. 1997, Dana\'s System of Mineralogy
    • Southern Province
      • Yaté Commune
    Wells, Martin A.; Ramanaidou, Erick R.; Verrall, Michael; Tessarolo, Christian (2009): Mineralogy and crystal chemistry of \"garnierites\" in the Goro lateritic nickel deposit, New Caledonia. European Journal of Mineralogy 21, 467-483.
    Poland
     
    • Lower Silesia (Dolnośląskie)
      • Gogołów-Jordanów Massif
        • Wiry
    Czeslaw Haranczyk and Karol Prchazka (1974) Hydrous magnesium-nickel silicates from Wiry, Lower Silesia. Prace Muzeum Ziemi, 22, 3-64 (in Polish, with English summary, p.56-62)
      • Ząbkowice District
        • Ząbkowice (Frankenstein)
    Spangenberg, K., and Müller, M. (1949): Contributions to Mineralogy and Petrology 1(5/6), 560-572.
    www.webmineral.com/data/Pimelite.shtml
    USA
     
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    Dunn(1995):Pt4:504.
    Leonard S.Wiener and Sigrid Ballew,1995, Updated by Kenny Gay,2006, A Listing Of North Carolina Minerals,Geologic Note No.4
      • Jackson Co.
        • Webster-Balsam
    Wilson,W.F and McKenzie,B.J,1978,Mineral Collecting Sites in North Carolina,pg35
      • Yancey Co.
        • Day Book
    Wilson,W.F,and McKenzie,B.J,1978,Mineral Collecting Sites in North Carolina
    • Oregon
      • Douglas Co.
    Gaines et al. 1997, Dana\'s System of Mineralogy
    • Pennsylvania
      • Lancaster Co.
        • Little Britain Township
          • Texas
    Gaines et al. 1997, Dana\'s System of Mineralogy
    • Vermont
      • Windham Co.
    Morrill & Chaffee, 1957. VT Mines & Mineral Localities.
    Rocks & Min. Vol. 71, (1996)
    Mineral and/or Locality
    Google
     
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 16th Nov 2009 01:11:10