Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Biotite from
Puxiong regolith-hosted REE deposit, Puxiong, Jianshui County, Honghe, Yunnan, China


Locality type:Outcrop
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Puxiong regolith-hosted REE deposit, Puxiong, Jianshui County, Honghe, Yunnan, China
Data Identifiers
Mindat Occurrence Record ID:1639669
Long-form Identifier:1:3:1639669:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
12.5km (7.8 miles) ⓘLongchahe pluton, Gejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
15.1km (9.4 miles) ⓘGejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
18.4km (11.5 miles) ⓘMalage ore field, Gejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
22.7km (14.1 miles) ⓘGaosong deposit, Gaosong ore field, Gejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
26.6km (16.5 miles) ⓘHonghe REE deposit, Gejiu City, Honghe, Yunnan, China
26.7km (16.6 miles) ⓘLaochang ore field (Laochang Mine), Gejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
27.3km (17.0 miles) ⓘZhuyeshan deposit, Laochang ore field (Laochang Mine), Gejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
29.4km (18.3 miles) ⓘKafang ore field, Gejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
34.8km (21.6 miles) ⓘTangziwa deposit, Laochang ore field (Laochang Mine), Gejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
35.2km (21.9 miles) ⓘSongshujiao ore field, Gejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
References
Wang, Min, Hei Li, Martin Yan, Zhou, Mei-Fu, Zhou, Jia-Xi, Sun, Guotao, Zhou, Ye, Li, Yin (2024) Enrichment of Rare Earth Elements During the Weathering of Alkaline Igneous Systems: Insights from the Puxiong Regolith-Hosted Rare Earth Element Deposit, SW China. Economic Geology, 119 (1) 161-187 doi:10.5382/econgeo.5024
 
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