Erentaolegai (Eren Tolgoi) Ag deposit, Altan Emel, Xin Barag Right Banner, Hulunbuir (Hulunbei'er) League, Inner Mongolia Autonomous Region, China

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Large-scale epithermal Ag vein deposit, consisting of layers, veins, and pods hosted in Late Jurassic volcanic rock, mainly Mesozoic Yanshanian adamellite and rhyolite porphyry. The deposit is strongly controlled by fractures. Two ore mineral assemblages occur, with Mn-Ag or Ag minerals in quartz-veins. Alterations are sericite, chlorite, silica, adularia and carbonate. The deposit occurs in a Variscan orogenic belt between the Siberian and North China Platforms.

References:
- Dong Zhensheng et al. (1996): Geochemistry of low-temperature independent Ag deposits. In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.
- Chaoyang Li, Tiegeng Liu, Lin Ye, Weiguang Zhu, and Hailin Deng (2003): Large and superlarge silver deposits associated with volcanic rocks in China. Science in China, Series D (Earth Sciences), 46, Supplement 1, 84-98.
- Xiang Chen, and Ge Zhang (2004): Isotope Geochemistry of Erentaolegai Silver Deposit, Inner Mongolia, China. Chinese Journal of Geochemistry 23(1), 71-80.

- http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt

Map Reference: 48°25'N , 116°31'E

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Mineral List:

Acanthite

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

'Adularia'

KAlSi

Reference:

[http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt]

Aguilarite

SeS

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Bromargyrite

AgBr

Reference:

[Chaoyang Li, Tiegeng Liu, Lin Ye, Weiguang Zhu, and Hailin Deng (2003): Science in China, Series D (Earth Sciences), 46, Supplement 1, 84-98.]

Chlorargyrite

AgCl

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

'Chlorite Group'

Reference:

[http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt]

Coronadite

Pb(Mn

,Mn

)

Reference:

[http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt]

Cryptomelane

K(Mn

,Mn

)

Reference:

[http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt]

Freibergite

(Ag

4+2x

2-2x

)[(Cu, Ag)

(Fe, Zn)

]Sb

1-x

(0 < x < 1)

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Gold
var: Electrum

(Au, Ag)

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Iodargyrite

AgI

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Jalpaite

CuS

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Limonite

FeO(OH)·nH

Reference:

[http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt]

Manganite

O(OH)

Reference:

[http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt]

Miargyrite

AgSbS

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Naumannite

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Pearceite

[(Ag,Cu)

(As,Sb)

][Ag

CuS

]

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Polybasite

[(Ag,Cu)

(Sb,As)

][Ag

CuS

]

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Proustite

AsS

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

'Psilomelane'

Reference:

[http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt]

Pyrargyrite

SbS

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Pyrolusite

MnO

Reference:

[http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt]

Quartz

SiO

Reference:

[Chaoyang Li, Tiegeng Liu, Lin Ye, Weiguang Zhu, and Hailin Deng (2003): Science in China, Series D (Earth Sciences), 46, Supplement 1, 84-98.]

Rhodochrosite

MnCO

Reference:

[Chaoyang Li, Tiegeng Liu, Lin Ye, Weiguang Zhu, and Hailin Deng (2003): Science in China, Series D (Earth Sciences), 46, Supplement 1, 84-98.]

'Sericite'

Reference:

[http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt]

Silver

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Stephanite

SbS

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Sternbergite

AgFe

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Stromeyerite

AgCuS

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Tetrahedrite

(Cu,Fe,Ag,Zn)

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

Tetrahedrite
var: Argentian Tetrahedrite

Reference:

[Dong Zhensheng et al. (1996). In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.]

31 entries listed. 24 valid minerals.

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