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Chlorophaeite
A mixture of two or more distinct mineral species
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A Mixture Of:
This material is of uncertain status. It was considered "possibly a chlorite" by Hey (1955) and Clark, 1993 - "Hey's Mineral Index". It is not considered a valid species by the IMA-CNMNC and is poorly defined.
However a study by Srodo et al (2019) indicated it to vary optically from isotropic to birefringent and to have XRD patterns consistent with a mixture of "Fe-montmorillonite and Fe-saponite, identical with griffithite and oxysmectites, probably preceded by a finer-grained ferrosaponite at the isotropic stage." Their XRD patterns indicate a mixture of dioctahedral and trioctahedral smectites, and the compositions (~(Ca0 · 1,Mg0 · 4,Al0 · 3,Fe1 · 1)Si3 · 8Al0 · 2O11)indicate essentially a hydrous iron silicate, with subordinate Mg, Al and Ca. The composition, optics and XRD patterns are very similar to hisingerite.
Originally described from Isle of Rhum, North West Highlands (Inverness-shire), Scotland, UK. This type material needs to be retested before its identity can be confirmed.
However a study by Srodo et al (2019) indicated it to vary optically from isotropic to birefringent and to have XRD patterns consistent with a mixture of "Fe-montmorillonite and Fe-saponite, identical with griffithite and oxysmectites, probably preceded by a finer-grained ferrosaponite at the isotropic stage." Their XRD patterns indicate a mixture of dioctahedral and trioctahedral smectites, and the compositions (~(Ca0 · 1,Mg0 · 4,Al0 · 3,Fe1 · 1)Si3 · 8Al0 · 2O11)indicate essentially a hydrous iron silicate, with subordinate Mg, Al and Ca. The composition, optics and XRD patterns are very similar to hisingerite.
Originally described from Isle of Rhum, North West Highlands (Inverness-shire), Scotland, UK. This type material needs to be retested before its identity can be confirmed.
Unique Identifiers
Mindat ID:
951
Long-form identifier:
mindat:1:1:951:1
Similar Names
| Chlorophoeite | A synonym of Clinochlore |
IMA Classification of Chlorophaeite
Questionable
Classification of Chlorophaeite
9..
9 : SILICATES (Germanates)
:
:
9 : SILICATES (Germanates)
:
:
Other Language Names for Chlorophaeite
Related Minerals - Strunz-mindat Grouping
| 9.. | 'Ursilite' | (Mg/Ca)4(UO2)4(Si2O5)5.5(OH)5 · 13H2O |
| 9.. | 'Oxy-uvite' | |
| 9.. | 'Franklinphilite' | |
| 9.. | 'Afanasyevaite' | |
| 9.. | 'Tetranatrolite' | |
| 9.. | 'Halloysite-7A' | |
| 9.. | 'Sodicpedrizite' | |
| 9.. | 'Sodic-ferropedrizite' | |
| 9.. | 'Oxy-rossmanite' | |
| 9.. | 'Hiortdahlite I' |
Other Information
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 Chlorophaeite
mindat.org URL:
https://www.mindat.org/min-951.html
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References for Chlorophaeite
Localities for Chlorophaeite
Showing 10 localities.
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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.
Canada | |
| Reamsbottom (1971) |
India | |
| Meteoritics & Planetary Science 40 et al. (2005) |
Poland | |
| Lis et al. (1986) |
Sweden | |
| GFF |
| |
UK | |
| Young (1987) |
| Cann (1965) +1 other reference |
| |
USA | |
| Emerson (1917) |
| Emerson (1882) +1 other reference |
