Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Calcium Amphibole Subgroup from
Yangjiayu Cu–Pb–Zn polymetallic deposit, Wulian Co., Rizhao, Shandong, China


Locality type:Deposit
Classification
Species:'Calcium Amphibole Subgroup' (not an IMA approved species)
Formula:AnCa2(C2+5-mCm3+)(Si8-(n+m)Al(n+m))W2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcium Amphibole Subgroup data
Locality Data:Click here to view Yangjiayu Cu–Pb–Zn polymetallic deposit, Wulian Co., Rizhao, Shandong, China
Data Identifiers
Mindat Occurrence Record ID:1705877
Long-form Identifier:1:3:1705877:7
GUID (UUID V4):0
References
Zhao, Huiji, Han, Yanchao, Liu, Yinan, Mao, Guangzhou, Chen, Lei, Cui, Yuanyuan, Liu, Yang, Liu, Yongming, Jiang, Quanguo, Wang, Lili (2025) Chronology and Petrogenesis of the Yangjiayu Complex from Eastern China: Evidence from Zircon U–Pb Dating, Hf Isotopes, and Geochemical Characteristics. Minerals, 15 (3). doi:10.3390/min15030321
 
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