Moqi agate
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Formula:
SiO2
Colour:
red, yellow and green
The name refers to agates found in Moqi, Inner Mongolia, China.
They are generally egg shaped.
Sixue Zhang et.al. state that: "[t]here is a darker and thicker oxide layer outside. The overall size is small (average size is 3.3 cm × 2.3 cm), and the color is rich. The colors found include yellow, green, gray, red etc. The color of the center is mainly yellow green, green, pink purple, and the outside of the color ring is mainly purple, red purple and brown red."
They are generally egg shaped.
Sixue Zhang et.al. state that: "[t]here is a darker and thicker oxide layer outside. The overall size is small (average size is 3.3 cm × 2.3 cm), and the color is rich. The colors found include yellow, green, gray, red etc. The color of the center is mainly yellow green, green, pink purple, and the outside of the color ring is mainly purple, red purple and brown red."
Unique Identifiers
Mindat ID:
470799 (as Moqi agate)
3337 (as Quartz)
3337 (as Quartz)
Long-form identifier:
mindat:1:1:470799:4 (as Moqi agate)
mindat:1:1:3337:0 (as Quartz)
mindat:1:1:3337:0 (as Quartz)
Physical Properties of Moqi agate
Colour:
Red, yellow and green
Comment:
It is found that the color of Moqi agate is related to the minerals and trace elements contained in it, and is associated with the electron transition or charge transfer of Fe ions in the contained minerals. Green agate has the highest Fe content, and its color is caused by celadonite inclusions. The red and yellow color in Moqi agate is mainly caused by hematite and goethite, while red agate contains more Fe than yellow agate.
Chemistry of Moqi agate
Mindat Formula:
SiO2
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.
Internet Links for Moqi agate
mindat.org URL:
https://www.mindat.org/min-470799.html
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References for Moqi agate
Localities for Moqi agate
Showing 1 localities.
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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.
China | |
| Zhang et al. (2023) |
