Pycnochlorite (original) (raw)

A variety of Clinochlore

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Formula:

Mg5Al(AlSi3O10)(OH)8

A variety of Clinochlore

Used by Hey (1954) in his widely used, formal classification of chlorites, for ones with Mg/(Mg+Fe) = 0.75-0.5 and Si = 5.6-6.2 atoms per 8 tetrahedral sites, but now considered a variety of clinochlore.

Originally spelled pyknochlorite (from German Pyknochlorit).

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Unique IdentifiersHide

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Mindat ID:

40405 (as Pycnochlorite)
1070 (as Clinochlore)

Long-form identifier:

mindat:1:1:40405:3 (as Pycnochlorite)
mindat:1:1:1070:8 (as Clinochlore)

GUID
(UUID V4):

2655f9c4-ca44-4575-bc96-3608ad4b3283 (as Pycnochlorite)
bf7559f1-7aa6-4577-8ba3-c2c209c692de (as Clinochlore)

Chemistry of PycnochloriteHide

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Mindat Formula:

Mg5Al(AlSi3O10)(OH)8

Elements listed:

Al, H, Mg, O, Si - search for minerals with similar chemistry

Synonyms of PycnochloriteHide

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Pyknochlorite

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.

Internet Links for PycnochloriteHide

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mindat.org URL:

https://www.mindat.org/min-40405.html
Please feel free to link to this page.

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• Look for Pycnochlorite in the Rock H. Currier Digital Library

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References for PycnochloriteHide

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Reference List:

Fromme, J. (1901): Minerale aus dem Radautale, u. a. Pyknochlorit, eine neue Chloritart. Zeitschrift für Kristallographie, Mineralogie und Petrographie 22(1), 62-73.

Hey, M. H. (1954): A new review of the chlorites. Mineralogical Magazine 30, 277-292.

Localities for PycnochloriteHide

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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.