Kerolite
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About Kerolite
Formula:
(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
Ni not essential
Colour:
white, brown, green, colorless
Lustre:
Waxy, Dull
Hardness:
2 - 2½
Crystal System:
Monoclinic
Originally reported from Ząbkowice (Frankenstein), Ząbkowice District, Lower Silesia (Dolnośląskie), Poland. Named by Breithaupt in 1823, after waxy appearance.
Detailed characterization of material from several localities by Brindley et al. (1977, 1979) implies that kerolite can be regarded as nanocrystalline (they estimate platelets 50 Å thick and 150 Å wide), stacking-disordered talc with a slightly enlarged layer spacing and significant water content,both as interlayer molecules and as hydroxyl groups strongly bound to the Mg silicate structure.
Kerolite is not listed as a valid species in the IMA list of minerals, but does not appear to have been formally discredited.
Detailed characterization of material from several localities by Brindley et al. (1977, 1979) implies that kerolite can be regarded as nanocrystalline (they estimate platelets 50 Å thick and 150 Å wide), stacking-disordered talc with a slightly enlarged layer spacing and significant water content,both as interlayer molecules and as hydroxyl groups strongly bound to the Mg silicate structure.
Kerolite is not listed as a valid species in the IMA list of minerals, but does not appear to have been formally discredited.
Unique Identifiers
Mindat ID:
7133
Long-form identifier:
mindat:1:1:7133:4
Similar Names
IMA Classification of Kerolite
'Grandfathered' (first described prior to 1959)
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Krl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Krl | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Physical Properties of Kerolite
Chemistry of Kerolite
Mindat Formula:
(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
Ni not essential
Ni not essential
Element Weights:
Crystallography of Kerolite
Crystal System:
Monoclinic
Cell Parameters:
b = 9.14 Å
Morphology:
Aggregates of submicron-scale platelets.
Comment:
Diffraction peaks are few and broad; d(001) = 9.6 Å
Synonyms of Kerolite
Other Language Names for Kerolite
Common Associates
Associations Based on Photo Data:
| 3 photos of Kerolite associated with 'Pimelite' | Ni3Si4O10(OH)2 · 4H2O |
| 3 photos of Kerolite associated with 'Chalcedony' | SiO2 |
| 2 photos of Kerolite associated with Magnesio-arfvedsonite | NaNa2(Mg4Fe3+)(Si8O22)(OH)2 |
| 1 photo of Kerolite associated with Innelite | Ba4Ti2Na(NaMn2+)Ti(Si2O7)2[(SO4)(PO4)]O2[O(OH)] |
| 1 photo of Kerolite associated with Orthoclase | K(AlSi3O8) |
| 1 photo of Kerolite associated with Edingtonite | Ba[Al2Si3O10] · 4H2O |
Other Information
IR Spectrum:
IR shows Si-O and lattice modes at 1000 cm-1 and below, 1620 cm-1 band from interlayer water, and multiple bands at 3600-3700 cm-1 due to O-H stretches
Thermal Behaviour:
Loses about 4% of mass as water vapor over 110-700oC; then abruptly loses another 5% (compare macrocrystalline talc, losing very little until 5% loss at 850 oC).
Notes:
Solubility and thermodynamic properties in Stoessel (1988)
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Kerolite
mindat.org URL:
https://www.mindat.org/min-7133.html
Please feel free to link to this page.
Please feel free to link to this page.
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Mineral Dealers:
References for Kerolite
Reference List:
Localities for Kerolite
Showing 55 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Fetherston et al. (2013) |
Cameroon | |
| Lambert et al. (2008) |
Cuba | |
| Tauler et al. (2023) |
| Domínguez-Carretero et al. (2024) |
Czech Republic | |
| Jirásek et al. (2015) |
| Dosbaba et al. (2012) |
Dominican Republic | |
| Villanova-de-Benavent et al. (2014) |
Ethiopia | |
| López-García et al. (2020) |
France | |
| Berger et al. (2011) +1 other reference |
| Cathelineau et al. (2023) |
| El Mendili et al. (2022) |
| Berger et al. (2011) +1 other reference |
| Berger et al. (2011) +1 other reference |
| Vale SA |
Germany | |
| Paul (1995) |
Indonesia | |
| Sufriadin et al. (2012) |
| Vale SA | |
Italy | |
| Prete (1995) |
| Boschi et al. (2019) |
Kazakhstan | |
| Korobkin et al. (2022) |
| Korobkin et al. (2022) | |
| Bespaev et al. (n.d.) |
Kosovo | |
| Buletini i Shkencave Gjeologjike 2012 |
Poland | |
| Wala A. (1970) |
| Fiedler H. (1863) |
| Traube (1888) +1 other reference |
| Traube (1888) |
| Fleischer et al. (1978) +1 other reference | |
| ... | |
| ... | |
Romania | |
| Ianovici et al. (1983) |
Russia | |
| Moseychuk et al. (2013) |
| Mikhailov (2000) |
| Mikhailov (2000) +2 other references |
| Mikhailov (2000) |
| Mikhailov (2000) |
| Mikhailov (2000) |
South America Plate | |
| Zhang et al. (2026) | |
| Silva et al. (2025) | |
| Schrank et al. (2024) | |
South Korea | |
| Song et al. (1995) |
| Song et al. (1995) | |
UK | |
| Clay Minerals Bull. 32:241 |
USA | |
| ... |
| Leveille +2 other references | |
| King et al. (1994) +1 other reference |
| Rocks & Minerals (1955) |
| Morrill & Hinckley |
| Yale Peabody Museum no. 3545 |
| Clays and Clay Minerals |
| |
| Genth et al. (1881) |
| G.W Brindley +1 other reference | |
| Matthews (1992) |
Venezuela | |
| Domènech et al. (2020) +1 other reference |
Gmina Ząbkowice Śląskie, Ząbkowice Śląskie County, Lower Silesian Voivodeship, Poland