Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Chalcocite from
Yulong Cu-(Mo) deposit, Jomdo Co. (Jiangda Co.), Qamdo Prefecture (Changdu Prefecture), Tibet, China


Locality type:Deposit
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Yulong Cu-(Mo) deposit, Jomdo Co. (Jiangda Co.), Qamdo Prefecture (Changdu Prefecture), Tibet, China
Data Identifiers
Mindat Occurrence Record ID:452650
Long-form Identifier:1:3:452650:6
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
9.0km (5.6 miles) ⓘZhanaga Cu-(Mo) deposit, Karuo District, Qamdo Prefecture (Changdu Prefecture), Tibet, China
31.7km (19.7 miles) ⓘMangzong Cu-(Mo) deposit, Karuo District, Qamdo Prefecture (Changdu Prefecture), Tibet, China
32.5km (20.2 miles) ⓘDuoxiasongduo Cu-(Mo) deposit, Karuo District, Qamdo Prefecture (Changdu Prefecture), Tibet, China
47.2km (29.3 miles) ⓘMalasongduo Cu-Mo deposit, Zhag'yab Co. (Chaya Co.), Qamdo Prefecture (Changdu Prefecture), Tibet, China
References
Dunmo Cheng, Mangen Zhou, and Benxian Wu (1982): Acta Mineralogica Sinica 2(3), 213-216
Zhao, H., Wang, Q., Li, W., Shu, Q., Sun, X., & Deng, J. (2022). The roles of emplacement depth, magma volume and local geologic conditions in the formation of the giant Yulong copper deposit, Eastern Tibet. Ore Geology Reviews, 145, 104877.
Chen, Qi; Yan, Tingjie; Du, Zezhong; Zhu, Jiaxuan; Du, Bin; Duan, Hongyu (2025) Fluid evolution and metal precipitation mechanisms in the Yulong porphyry Cu-Mo deposit, Eastern Tibet: insights from the two-stage mineralization process. Ore Geology Reviews, 184. 106713 doi:10.1016/j.oregeorev.2025.106713
 
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