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It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Sericite from
Ermi Cu deposit, Tonghua Co., Tonghua, Jilin, China


Locality type:Deposit
Classification
Species:Muscovite var: Sericite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sericite data
Locality Data:Click here to view Ermi Cu deposit, Tonghua Co., Tonghua, Jilin, China
Data Identifiers
Mindat Occurrence Record ID:456206
Long-form Identifier:1:3:456206:1
GUID (UUID V4):0
Nearest other occurrences of Sericite
21.2km (13.2 miles) ⓘChibaisong Cu-Ni-PGE deposit, Tonghua Co., Tonghua, Jilin, China
47.3km (29.4 miles) ⓘNancha Au deposit, Hunjiang District, Baishan, Jilin, China
47.9km (29.8 miles) ⓘFuxingcun Au deposit, Hunjiang District, Baishan, Jilin, China
57.5km (35.7 miles) ⓘShipenggou Au deposit, Tonghua, Jilin, China
58.5km (36.4 miles) ⓘYantongqiaozi Au deposit, Meihekou Co., Tonghua, Jilin, China
61.3km (38.1 miles) ⓘDahenglu Mine, Hunjiang District, Baishan, Jilin, China
63.2km (39.3 miles) ⓘXiaoshiren Au deposit, Jiangyuan District (Hunjiang Co.), Baishan, Jilin, China
65.5km (40.7 miles) ⓘErdaoyangca Pb-Zn-Cu deposit, Jiangyuan District (Hunjiang Co.), Baishan, Jilin, China
79.8km (49.6 miles) ⓘGuojialing Pb-Zn section, Ji'an deposit, Ji'an Co., Tonghua, Jilin, China
81.0km (50.4 miles) ⓘLiujiapuzhi Au deposit, Jiangyuan District (Hunjiang Co.), Baishan, Jilin, China
References
wrgis.wr.usgs.gov (2004) http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt
Keevil, Halley A.; Monecke, Thomas; Goldfarb, Richard J.; Feng, Tao (2022) Metallogeny of the Hunjiang basin, northeastern North China block. Ore Geology Reviews, 148. p.104995. doi:10.1016/j.oregeorev.2022.104995
Dong, Guozhen; Zhao, Junkang; Sun, Jinggui; Han, Jilong (2025) Fluid evolution of the Ermi porphyry Cu system, southern Jilin Province, northeastern China. Ore Geology Reviews, 183. 106664 doi:10.1016/j.oregeorev.2025.106664
 
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