Ekmanite
A variety of Stilpnomelane
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About Ekmanite
Formula:
(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Crystal System:
Orthorhombic
Name:
Named and first decribed by Igelström 1865 from the Brunsjö Mine (Brunnsjö Mine), Grythyttan, Hällefors, Västmanland, Sweden.
A variety of Stilpnomelane
Obsolete name for a Mn-rich stilpnomelane; the name was discredited in 1954.
The Mica Subcommittee (1998) regarded this as possibly Smectite.
Obsolete name for a Mn-rich stilpnomelane; the name was discredited in 1954.
The Mica Subcommittee (1998) regarded this as possibly Smectite.
Unique Identifiers
Mindat ID:
6912 (as Ekmanite)
3789 (as Stilpnomelane)
3789 (as Stilpnomelane)
Long-form identifier:
mindat:1:1:6912:6 (as Ekmanite)
mindat:1:1:3789:7 (as Stilpnomelane)
mindat:1:1:3789:7 (as Stilpnomelane)
GUID
(UUID V4):
(UUID V4):
215f7cd2-ae0b-47af-8735-3a0bcc0d3ff1 (as Ekmanite)
908665b2-7c31-4fb1-8481-ec034d10bd93 (as Stilpnomelane)
908665b2-7c31-4fb1-8481-ec034d10bd93 (as Stilpnomelane)
IMA Classification of Ekmanite
Discredited
Chemistry of Ekmanite
Mindat Formula:
(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Crystallography of Ekmanite
Crystal System:
Orthorhombic
Synonyms of Ekmanite
Other Language Names for Ekmanite
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 Ekmanite
mindat.org URL:
https://www.mindat.org/min-6912.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Ekmanite
Reference List:
Hamberg, Axel (1889) Mineralogische Śtudien.1. Optische Eigenschaften des Ekmanit [Mineralogical studies.1. Optical properties of Ekmanite]. Geologiska Föreningen i Stockholm Förhandlingar, 11 (1) 25-27 doi:10.1080/11035898909445430
Localities for Ekmanite
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.
Japan | |
| M. Nakagawa et al. (2009) |
| M. Nakagawa et al. (2009) |
| M. Nakagawa et al. (2009) | |
Sweden | |
| Hamberg (1889) +1 other reference |
| |
USA | |
| Wood (1979) +1 other reference |
Brunnsjögruvan, Grythyttan, Hällefors, Örebro County, Sweden