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.
Search Engines:
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
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).
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.
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