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Jian forsterite jade
A variety of Forsterite
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Formula:
Mg2SiO4
Colour:
yellowish-green, dark-green, and black
Name:
For the locality
Forsterite (Fo 99.8), serpentine, as well as minor brucite, spinel, phlogopite, dolomite, calcite, magnesite, and magnetite. The Jian forsterite jade consists mainly of forsterite (50â55 %), serpentine (30â45 %).
Originates from magnesium-rich dolomite. The genesis of the Jian forsterite jade can be outlined in two main metamorphic stages: (1) high-temperature prograde stage related to the interaction of the gneiss-derived SiO2-rich fluids with overlying dolomite. High temperature leads to the formation of forsterite, spinel, and calcite mineral assemblage. (2) low-temperature retrograde stage characterized by the infiltration of hydrous fluids. Hydrous silicate minerals, mostly serpentine, phlogopite, and talc, are formed during this stage.
Originates from magnesium-rich dolomite. The genesis of the Jian forsterite jade can be outlined in two main metamorphic stages: (1) high-temperature prograde stage related to the interaction of the gneiss-derived SiO2-rich fluids with overlying dolomite. High temperature leads to the formation of forsterite, spinel, and calcite mineral assemblage. (2) low-temperature retrograde stage characterized by the infiltration of hydrous fluids. Hydrous silicate minerals, mostly serpentine, phlogopite, and talc, are formed during this stage.
Unique Identifiers
Mindat ID:
470531 (as Jian forsterite jade)
1584 (as Forsterite)
1584 (as Forsterite)
Long-form identifier:
mindat:1:1:470531:0 (as Jian forsterite jade)
mindat:1:1:1584:0 (as Forsterite)
mindat:1:1:1584:0 (as Forsterite)
Physical Properties of Jian forsterite jade
Colour:
Yellowish-green, dark-green, and black
Chemistry of Jian forsterite jade
Mindat Formula:
Mg2SiO4
Element Weights:
Elements listed:
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.
Industrial Uses:
gemstone
Internet Links for Jian forsterite jade
mindat.org URL:
https://www.mindat.org/min-470531.html
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References for Jian forsterite jade
Reference List:
Localities for Jian forsterite jade
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
China | |
| Peng et al. (2022) +1 other reference |
