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Meta-kaolinite

Invalid as an unnamed mineral
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Formula:
Al2O3 · 2SiO2
may also be formulated as Al2Si2O7
An important transformation phase related to kaolinite, at least during coal combustion experiments (synthetic, although possibly existing in many natural fire- and temperature-metamorphism-related environments). In the literature it also occurs as metakaolinite or "metakaolin". Found, e.g., in ceramics.

According to Querol et al. (1994), the phase forms from kaolinite at 450oC. At 900oC it gives rise to 'silicon spinel'.


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Unique IdentifiersHide

Mindat ID:
51666
Long-form identifier:
mindat:1:1:51666:8

IMA Classification of Meta-kaoliniteHide

IMA status notes:
Unnamed (probably invalid)

Chemistry of Meta-kaoliniteHide

Mindat Formula:
Al2O3 · 2SiO2

may also be formulated as Al2Si2O7
Element Weights:
Element% weight
O50.419 %
Si25.288 %
Al24.294 %

Calculated from ideal end-member formula.

Synonyms of Meta-kaoliniteHide

Other InformationHide

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 Meta-kaoliniteHide

References for Meta-kaoliniteHide

Localities for Meta-kaoliniteHide

Showing 2 localities.

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.
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Locality ListHide

- 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.
Poland
 
  • Silesian Voivodeship
    • Wodzisław County
      • Marklowice
Ł. Kruszewski EPMA data (publication in progress)
Serbia
 
  • Central Serbia
    • NiÅĄava District
      • RaÅūanj
MiloÅĄević et al. (2024)
 
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