magadiite
Sign in to saveAlso known as IMA1967-017
Magadiite is a hydrous sodium silicate mineral (NaSi7O13(OH)3·4(H2O)) which precipitates from alkali brines as an evaporite phase. It forms as soft (Mohs hardness of 2) white powdery monoclinic crystal masses. The mineral is unstable and decomposes during diagenesis leaving a distinctive variety of chert (Magadi-type chert).
In the Vinony graph
Within Vinony's link graph, magadiite is referenced by 6 other articles, and connects out to Mohs scale of mineral hardness, silicate mineral and Canada.
It sits within the topics Minerals in space group 12, Monoclinic minerals and Phyllosilicates.
Its subject is documented across 6 Wikipedia language editions.
Wikidata facts
- Subclass of
- phyllosilicates
- Named after
- Lake Magadi
- Image
- Magadiite-696064.jpg
Show 8 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.EA.20
- chemical formula
- Na₂Si₁₄O₂₉·11H₂O
- Nickel-Strunz 9th edition (updated 2009)
- 9.EA.20
- type locality (geology)
- Lake Magadi
- streak color
- white
- Commons category
- Magadiite
- IMA Mineral Symbol
- Mgd
- Strunz 8th edition (series ID, updated)
- VIII/F.09 – Anhang
Sources (1)
via Wikidata · CC0
~1 min read
Encyclopedic overview
1 sectionsContents
- References
Magadiite is a hydrous sodium silicate mineral (NaSi7O13(OH)3·4(H2O)) which precipitates from alkali brines as an evaporite phase. It forms as soft (Mohs hardness of 2) white powdery monoclinic crystal masses. The mineral is unstable and decomposes during diagenesis leaving a distinctive variety of chert (Magadi-type chert).
The mineral was first described by Hans P. Eugster in 1967 for an occurrence in Lake Magadi, Kenya, and is also found at Olduvai Gorge, Tanzania. It is also reported from alkalic intrusive syenites as in Mont Saint-Hilaire, Canada.
Excerpted from Wikipedia’s “magadiite” article, available under the CC BY-SA 4.0 licence.