Pimelite (original) (raw)

A material that is NOT an approved mineral species

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03745920014946250813664.jpg

07958630014946250878339.jpg

About PimeliteHide

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Formula:

Ni3Si4O10(OH)2 · 4H2O

Colour:

Bright green, apple green, yellow-green

Specific Gravity:

2.23 - 2.98

Name:

Named by Dietrich Ludwig Gustav Karsten in 1800 for the Greek word for "fat", in allusion to the mineral's appearance. Pimelite was determined to be a smectite as early as 1938 [also American Mineralogist 51:279 [1966]. Later erroneously ascribed to nickel-rich talc (American Mineralogist 64:615 [1979]). Both nickel-bearing talc, intermediate nickeloan nontronite, and nickel dominant smectite occur at the type locality. A re-validation research project has begun.

A significant literature exists verifying that pimelite is nickel-dominant smectite, although there are studies which misidentified the starting material as "pimelite" and reached erroneous conclusions. Often thought to be a colouring agent in chrysoprase, but probably rarely present in that material.

Dark grass to forest-green masses of pimelite are found in colour-zoned pods (to 1 meter) with yellow-green nickeloan nontronite associated with red-brown hematite-stained nontronite and adjacent to bright white montmorillonite pods in a weathering profile.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:7236:2

7778b7f8-dc49-4cc3-a843-d39b757b4571

IMA Classification of PimeliteHide

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IMA status notes:

Rejected by the IMA

Approval history:

Rejected by IMA: 2006

Classification of PimeliteHide

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9.EC.22

9 : SILICATES (Germanates)
E : Phyllosilicates
C : Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets

71.3.1b.5

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

Physical Properties of PimeliteHide

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Colour:

Bright green, apple green, yellow-green

Streak:

White to pale green

Fracture:

Irregular/Uneven

Density:

2.23 - 2.98 g/cm3 (Measured) 2.68 g/cm3 (Calculated)

Optical Data of PimeliteHide

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RI values:

_n_α = 1.592 _n_γ = 1.615

Birefringence:

0.014-0.025

δ = 0.023

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Optical Extinction:

Can appear isotropic

Comments:

Pale green colorless to light yellow green

Chemistry of PimeliteHide

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Mindat Formula:

Ni3Si4O10(OH)2 · 4H2O

Crystallography of PimeliteHide

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Cell Parameters:

a = 5.256 Å, c = 14.822 Å

Unit Cell V:

354.61 ų (Calculated from Unit Cell)

Comment:

Expands to 17.35 A using glycol

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing Intensity
15.1 Å (100)
4.56 Å (40)
3.34 Å (20)
2.66 Å (40)
2.27 Å (20)
1.72 Å (10)
1.52 Å (80)

First Recorded Occurrence of PimeliteHide

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Synonyms of PimeliteHide

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Other Language Names for PimeliteHide

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Relationship of Pimelite to other SpeciesHide

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Other Members of this group:

Beidellite (Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O Mon. 2/m : _B_2/m
Ferrosaponite Ca0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O Mon.
Hectorite Na0.3(Mg,Li)3(Si4O10)(F,OH)2 Mon. 2/m : _B_2/m
Montmorillonite (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O Mon. 2/m : _B_2/m
Nontronite Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O Mon. 2/m : _B_2/m
Saliotite (Li,Na)Al3(AlSi3O10)(OH)5 Mon. 2/m : _B_2/m
Saponite Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O Mon.
Sauconite Na0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O Mon.
Stevensite (Ca,Na)xMg3-x(Si4O10)(OH)2 Mon.
Swinefordite Li(Al,Li,Mg)3((Si,Al)4O10)2(OH,F)4 · nH2O Mon. 2/m : _B_2/m
Vermiculite Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O Mon. 2/m
Volkonskoite Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O Mon.
Yakhontovite (Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2O Mon.
Zincsilite Zn3Si4O10(OH)2 · 4H2O (?) Mon.

Common AssociatesHide

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Associated Minerals Based on Photo Data:

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9.EC. Balestraite KLi2V5+Si4O12 Mon. 2 : _B_2
9.EC. Meifuite KFe6(Si7Al)O19(OH)4Cl2 Tric. 1 : _P_1
9.EC.05 Minnesotaite Fe2+3Si4O10(OH)2 Tric. 1 : _P_1
9.EC.05 Talc Mg3Si4O10(OH)2 Tric. 1 : _P_1
9.EC.05 Willemseite Ni3Si4O10(OH)2 Mon.
9.EC.9.EC. Voloshinite Rb(LiAl1.5◻0.5)(Al0.5Si3.5)O10F2 Mon. 2/m : _B_2/b
9.EC.10 Ferripyrophyllite Fe3+Si2O5(OH) Mon. 2/m
9.EC.10 Pyrophyllite Al2Si4O10(OH)2 Tric. 1
9.EC.10 Luanshiweiite KLiAl1.5(Si3.5Al0.5)O10(OH)2 Mon. 2/m : _B_2/b
9.EC.10 Fluorluanshiweiite KLiAl1.5(Si3.5Al0.5)O10F2 Mon. 2/m : _B_2/m
9.EC.10 Manganiceladonite K(MgMn3+◻)(Si4O10)(OH)2 Mon.
9.EC.10 Garmite CsLiMg2(Si4O10)F2 Mon.
9.EC.10 Gorbunovite CsLi2(Ti,Fe)Si4O10(F,OH,O)2 Mon.
9.EC.15 Boromuscovite KAl2(BSi3O10)(OH)2 Mon. 2/m
9.EC.15 Celadonite K(MgFe3+◻)(Si4O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.15 Chernykhite (Ba,Na)(V3+,Al,Mg)2((Si,Al)4O10)(OH)2 Mon.
9.EC.15 Montdorite (K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4 Mon. 2/m : _B_2/m
9.EC.15 Muscovite KAl2(AlSi3O10)(OH)2 Mon. 2/m : _B_2/b
9.EC.15 Nanpingite CsAl2(AlSi3O10)(OH,F)2 Mon. 2/m : _B_2/b
9.EC.15 Paragonite NaAl2(AlSi3O10)(OH)2 Mon.
9.EC.15 Roscoelite K(V3+,Al)2(AlSi3O10)(OH)2 Mon. 2/m : _B_2/b
9.EC.15 Tobelite (NH4,K)Al2(AlSi3O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.15 Aluminoceladonite K(MgAl◻)(Si4O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.15 Chromphyllite K(Cr,Al)2(AlSi3O10)(OH,F)2 Mon. 2/m : _B_2/b
9.EC.15 Ferroaluminoceladonite K(Fe2+Al◻)(Si4O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.15 Ferroceladonite K(Fe2+Fe3+◻)(Si4O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.15 Chromceladonite K(MgCr◻)(Si4O10)(OH)2 Mon. 2 : _B_2
9.EC.15 Tainiolite KLiMg2(Si4O10)F2 Mon. 2/m : _B_2/m
9.EC.15 Ganterite (Ba,Na,K)(Al,Mg)2(AlSi3O10)(OH)2 Mon. 2/m : _B_2/b
9.EC.15 UM1988-22-SiO:AlCaFFeHKLiMg KLiMgAl2Si3O10F2 Mon.
9.EC.15 Kreiterite CsLi2Fe3+(Si4O10)F2 Mon.
9.EC.20 Annite KFe2+3(AlSi3O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.20 Ephesite NaLiAl2(Al2Si2O10)(OH)2 Tric. 1 : _P_1
9.EC.20 Hendricksite KZn3(Si3Al)O10(OH)2 Mon. 2/m : _B_2/m
9.EC.20 Masutomilite (K,Rb)(Li,Mn3+,Al)3(AlSi3O10)(F,OH)2 Mon. 2 : _B_2
9.EC.20 Norrishite KLiMn3+2(Si4O10)O2 Mon. 2/m : _B_2/m
9.EC.20 Phlogopite KMg3(AlSi3O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.20 Polylithionite KLi2Al(Si4O10)(F,OH)2 Mon. 2/m : _B_2/b
9.EC.20 Preiswerkite NaMg2Al(Al2Si2O10)(OH)2 Mon. 2/m : _B_2/b
9.EC.20 Siderophyllite KFe2+2Al(Al2Si2O10)(OH)2 Mon.
9.EC.20 Tetraferriphlogopite KMg3(Fe3+Si3O10)(OH,F)2 Mon. 2/m : _B_2/m
9.EC.20 Fluorotetraferriphlogopite KMg3(Fe3+Si3O10)F2 Mon. 2/m : _B_2/m
9.EC.20 Wonesite (Na,K)(Mg,Fe,Al)6((Al,Si)4O10)2(OH,F)4 Mon. 2/m : _B_2/m
9.EC.20 Eastonite KMg2Al(Al2Si2O10)(OH)2 Mon.
9.EC.20 Tetraferriannite KFe2+3(Si3Fe3+)O10(OH)2 Mon. 2/m : _B_2/m
9.EC.20 Trilithionite K(Li1.5Al1.5)(AlSi3O10)(F,OH)2 Mon. 2/m : _B_2/b
9.EC.20 Fluorannite KFe2+3(Si3Al)O10F2 Mon. 2/m : _B_2/m
9.EC.20 Shirokshinite K(NaMg2)(Si4O10)F2 Mon. 2/m : _B_2/m
9.EC.20 Shirozulite KMn2+3(Si3Al)O10(OH)2 Mon. 2/m : _B_2/m
9.EC.20 Sokolovaite CsLi2Al(Si4O10)F2 Mon.
9.EC.20 Aspidolite NaMg3(AlSi3O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.20 Fluorophlogopite KMg3(Si3Al)O10F2 Mon. 2/m : _B_2/m
9.EC.20 UM2004-49-SiO:AlCsFHKLi (Cs,K)(Al,Li)2.6((Si,Al)4O10)(F,OH)2
9.EC.20 Suhailite (NH4)Fe2+3(AlSi3O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.20 Yangzhumingite KMg2.5(Si4O10)F2 Mon. 2/m : _B_2/m
9.EC.20 Orlovite KLi2Ti(Si4O10)OF Mon. 2 : _B_2
9.EC.20 Oxyphlogopite K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2 Mon. 2/m : _B_2/m
9.EC.20 Chloroferrokinoshitalite (Ba,K)(Fe2+,Mg)3(Al2Si2O10)(Cl,OH,F)2
9.EC.30 Chlorophaeite (Ca,Mg,Fe)2Fe2Si4O13 · 10H2O
9.EC.30 Margarite CaAl2(Al2Si2O10)(OH)2 Mon. 2/m : _B_2/b
9.EC.35 Anandite (Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2 Mon. 2/m : _B_2/b
9.EC.35 Bityite CaLiAl2(AlBeSi2O10)(OH)2 Mon. 2/m : _B_2/b
9.EC.35 Clintonite CaAlMg2(SiAl3O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.35 Kinoshitalite (Ba,K)(Mg,Mn2+,Al)3(Al2Si2O10)(OH)2 Mon. 2/m : _B_2/m
9.EC.35 Ferrokinoshitalite (Ba,K)(Fe2+,Mg)3(Al2Si2O10)(OH,F)2 Mon. 2/m : _B_2/m
9.EC.35 Oxykinoshitalite (Ba,K)(Mg,Ti,Fe3+,Fe2+)3((Si,Al)4O10)(O,OH,F)2 Mon. 2/m : _B_2/m
9.EC.35 Fluorokinoshitalite BaMg3(Al2Si2O10)F2 Mon. 2/m : _B_2/m
9.EC.40 Beidellite (Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O Mon. 2/m : _B_2/m
9.EC.40 Kurumsakite (Zn,Ni,Cu)8Al8V5+2Si5O35 · 27H2O (?) Orth.
9.EC.40 Montmorillonite (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O Mon. 2/m : _B_2/m
9.EC.40 Nontronite Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O Mon. 2/m : _B_2/m
9.EC.40 Volkonskoite Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O Mon.
9.EC.40 Yakhontovite (Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2O Mon.
9.EC.45 Hectorite Na0.3(Mg,Li)3(Si4O10)(F,OH)2 Mon. 2/m : _B_2/m
9.EC.45 Saponite Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O Mon.
9.EC.45 Sauconite Na0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O Mon.
9.EC.45 Spadaite MgSiO2(OH)2 · H2O (?)
9.EC.45 Stevensite (Ca,Na)xMg3-x(Si4O10)(OH)2 Mon.
9.EC.45 Swinefordite Li(Al,Li,Mg)3((Si,Al)4O10)2(OH,F)4 · nH2O Mon. 2/m : _B_2/m
9.EC.45 Zincsilite Zn3Si4O10(OH)2 · 4H2O (?) Mon.
9.EC.45 Ferrosaponite Ca0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O Mon.
9.EC.45 Hanjiangite Ba2CaV3+Al(H2AlSi3O12)(CO3)2F Mon. 2 : _B_2
9.EC.50 Vermiculite Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O Mon. 2/m
9.EC.52 Tarasovite near NaKAl11Si13O40(OH)9 · 3H2O
9.EC.55 Baileychlore (Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8 Tric. 1
9.EC.55 Chamosite (Fe2+)5Al(Si,Al)4O10(OH,O)8 Mon. 2/m : _B_2/m
9.EC.55 Clinochlore Mg5Al(AlSi3O10)(OH)8 Mon. 2/m : _B_2/m
9.EC.55 Cookeite (LiAl4◻)[AlSi3O10](OH)8 Mon. 2/m
9.EC.55 Franklinfurnaceite Ca2Fe3+Mn2+3Mn3+(Zn2Si2O10)(OH)8 Mon. 2 : _B_2
9.EC.55 Gonyerite (Mn2+,Mg)5Fe3+(Fe3+Si3O10)(OH)8 Orth.
9.EC.55 Nimite (Ni,Mg,Al)6((Si,Al)4O10)(OH)8 Mon. 2/m : _B_2/m
9.EC.55 Orthochamosite (Fe2+,Mg,Fe3+)5Al(AlSi3O10)(OH,O)8
9.EC.55 Pennantite Mn2+5Al(AlSi3O10)(OH)8 Tric.
9.EC.55 Sudoite Mg2Al3(Si3Al)O10)(OH)8 Mon. 2/m : _B_2/m
9.EC.55 Donbassite Al4.33(Si3Al)O10(OH)8 Mon. 2 : _B_2
9.EC.55 Glagolevite Na(Mg,Al)6(AlSi3O10)(OH,O)8 Tric. 1 : _P_1
9.EC.55 Borocookeite (LiAl4◻)[BSi3O10](OH)8 Mon. m : B b
9.EC.60 Aliettite Ca0.2Mg6((Si,Al)8O20)(OH)4 · 4H2O Mon.
9.EC.60 Corrensite (Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O Orth.
9.EC.60 Dozyite Mg7Al2(Al2Si4O15)(OH)12 Mon.
9.EC.60 Hydrobiotite K(Mg,Fe2+)6((Si,Al)8O20)(OH)4 · nH2O Mon. 2/m : _B_2/m
9.EC.60 Karpinskite (Ni,Mg)2Si2O5(OH)2 (?) Mon.
9.EC.60 Kulkeite Mg8Al(AlSi7O20)(OH)10 Mon.
9.EC.60 Lunijianlaite Li0.7Al6.2(AlSi7O20)(OH,O)10 Mon.
9.EC.60 Rectorite (Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O Mon.
9.EC.60 Saliotite (Li,Na)Al3(AlSi3O10)(OH)5 Mon. 2/m : _B_2/m
9.EC.60 Tosudite Na0.5(Al,Mg)6((Si,Al)8O18)(OH)12 · 5H2O Mon. 2 : _B_2
9.EC.60 Brinrobertsite Na0.3Al4(Si4O10)2(OH)4 · 3.5 H2O Mon.
9.EC.65 Macaulayite (Fe,Al)24Si4O43(OH)2 Mon.
9.EC.70 Burckhardtite Pb2(Fe3+Te6+)[AlSi3O8]O6 Trig. 3_m_ _(_32/m ) : P_31_m
9.EC.75 Ferrisurite (Pb,Ca)2.4Fe3+2(Si4O10)(CO3)1.7(OH)3 · nH2O Mon.
9.EC.75 Surite (Pb,Ca)3(Al,Fe2+,Mg)2((Si,Al)4O10)(CO3)2(OH)2 Mon. 2 : _P_21
9.EC.75 Niksergievite (Ba,Ca)2Al3(AlSi3O10)(CO3)(OH)6 · nH2O Mon.
9.EC.80 Kegelite Pb8Al4(Si8O20)(SO4)2(CO3)4(OH)8 Mon.

Fluorescence of PimeliteHide

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Other InformationHide

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Health Risks:

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

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References for PimeliteHide

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Localities for PimeliteHide

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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

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Brazil
Piauí Capitão Gervásio de Oliveira São João do Piauí deposit Dybowska et al. (2022)
Colombia
Córdoba Department Montelíbano Cerro Matoso Mine (Cerro Matoso S. A. Laterite deposit) Econ Geol (2004)
Czech Republic
South Bohemian Region Český Krumlov District Kremze Čech
Vysočina Region Žďár nad Sázavou District Věchnov Pelíšek
Dominican Republic
Monseñor Nouel Province Bonao Falcondo Mines Villanova-de-Benavent et al. (2014)
France
New Caledonia Northern Province Houaïlou Poro Mine Berger +1 other reference
Koné Cagou Pit Cathelineau et al. (2023)
Koniambo Massif Cathelineau et al. (2023)
Kouaoua Anniversaire Mine Manceau et al. (1985)
Pouembout Népoui Mine Berger +1 other reference
Poum Poum Berger +1 other reference
Poya North Népoui Gaines et al. (1997)
Southern Province Yaté Goro Mine Wells +7 other references
Indonesia
South Sulawesi Province East Luwu Regency Sorowako Petea Mine Sufriadin et al. (2012)
Sorowako Mine (PT International Nickel mine; Soroaka Mine; Soroako Mine) Sufriadin et al. (2012)
Kazakhstan
Karaganda Region Karkaraly Saryku-Boldy deposit (Sarykul'-Boldy) Gaines et al. (1997)
Morocco
Drâa-Tafilalet Region Zagora Province Agdz Cercle Tansifte Caïdat Aït Ahmane Eur. J. Mineral.
Poland
Lower Silesian Voivodeship Dzierżoniów County Gmina Niemcza Gilów Gilów talc deposit Gil et al. (2022)
Kłodzko County Nowa Ruda Piast Mine Lis et al. (1986)
Świdnica County Gmina Marcinowice Wirki 'Wiry' magnesite mine Harańczyk C. (1974)
Wiry Czeslaw Haranczyk and Karol Prchazka (1974)
Ząbkowice Śląskie County Gmina Bardo Grochowa Lis et al. (1986)
Gmina Ciepłowody Koźmice www.webmineral.com/data/Pimelite.shtml
Gmina Ząbkowice Śląskie Braszowice Lis et al. (1986)
Szklary (FRL) Spangenberg et al. (1949)
Szklary Chrysoprase Mine Spangenberg et al. (1949)
Szklary nickel deposit Kaczan et al. (2021)
South Korea
Gyeonggi Province Gwacheon City Buksite Song et al. (1995)
Namsite Song et al. (1995)
Spain
Andalusia Málaga Álora El Sapo mine Romero Silva (2003)
Carratraca Los Jarales San Juan Evangelista Mine (San Juan Mine) Romero Silva JC (2003)
San Agustín Romero Silva JC (2003)
Mijas El Nebral Mine Romero Silva JC (2003)
Ojén Ojén lherzolite massif La Gallega Mine Romero Silva JC (2003) +1 other reference
USA
New Jersey Sussex County Franklin Franklin Mine Trotter Mine Dunn (1995)
North Carolina
Jackson County Webster-Balsam Webster-Addie ultramafic ring dike Wilson et al. (1978)
Yancey County Day Book Day Book Chromite Prospect Wilson et al. (1978)
Oregon Douglas County Riddle Mining District Gaines et al. (1997)
Pennsylvania Lancaster County Little Britain Township Texas Wood's Chrome Mine Gaines et al. (1997)
Vermont Windham County Newfane Morrill & Chaffee
Adams Brook nickel prospect ? Rocks & Min. Vol. 71 (1996)
Venezuela
Aragua Santos Michelena Loma de Hierro Domènech et al. (2022)