Tectonogeochemical features and metallogenic prognosis in the Xiaolongtan copper mining district, Binchuan, Yunnan Province, China

2007 ◽  
Vol 26 (3) ◽  
pp. 276-283
Author(s):  
Mingqin He ◽  
Huanbin Song ◽  
Xunqing Su
Keyword(s):  
Yunnan Province ◽  
Copper Mining ◽  
Mining District ◽  
Metallogenic Prognosis

Temporal Geochemical Evolution of Neogene Magmatism in the Baguio Gold?Copper Mining District (Northern Luzon, Philippines)

2007 ◽  
Vol 57 (2) ◽  
pp. 197-218 ◽  
Author(s):  
Mireille Polve ◽  
Rene C. Maury ◽  
Sebastien Jego ◽  
Herve Bellon ◽  
Ahmed Margoum ◽  
...  
Keyword(s):  
Geochemical Evolution ◽  
Copper Mining ◽  
Mining District

Anomalous Trace Element Composition of Coastal Sediments near the Copper Mining District of Santa Rosalía, Peninsula of Baja California, Mexico

2000 ◽  
Vol 65 (2) ◽  
pp. 261-268 ◽  
Author(s):  
E. N. Shumilin ◽  
G. Rodríguez-Figueroa ◽  
O. Morton Bermea ◽  
E. Lounejeva Baturina ◽  
E. Hernández ◽  
...  
Keyword(s):  
Trace Element ◽  
Baja California ◽  
Trace Element Composition ◽  
Element Composition ◽  
Coastal Sediments ◽  
Copper Mining ◽  
Mining District ◽  
Santa Rosalia

Tangdanite, a new mineral species from the Yunnan Province, China and the discreditation of ‘clinotyrolite’

2014 ◽  
Vol 78 (3) ◽  
pp. 559-569 ◽  
Author(s):  
Ma Zhesheng ◽  
Li Guowu ◽  
N. V. Chukanov ◽  
G. Poirier ◽  
Shi Nicheng
Keyword(s):  
Yunnan Province ◽  
Short Wave ◽  
Mineral Species ◽  
Sulfide Deposit ◽  
New Mineral ◽  
Mining District ◽  
Calculated Density ◽  
Cell Parameters ◽  
New Mineral Species ◽  
Perfect Cleavage

AbstractTangdanite, ideally Ca2Cu9(AsO4)4(SO4)0.5(OH)9·9H2O and monoclinic, is a new mineral species (IMA No. 2011-096) occurring in the Tangdan and Nanniping mines, southeast Dongchuan copper mining district, Dongchuan County, Kunming City Prefecture, Yunnan Province, P. R. China (26°11’N 103°51’E). The mineral is found in the oxidized zone (gossan) of an As-bearing Cu sulfide deposit and is clearly of supergene origin. Associated minerals are chalcopyrite, bornite, chalcocite, covellite, tennantite, enargite, cuprite, malachite, azurite, copper and brochantite. Crystals form radiating or foliated aggregates of flaky crystals up to 3 mm, flattened parallel to (100) and elongated along [001]. It is emerald green with a light green streak, translucent and has a pearly to silky lustre. It is sectile having perfect cleavage on {100} although neither parting nor fracture was observed. No fluorescence in long- or short-wave ultraviolet radiation was observed. The hardness is VHN50 42.0−43.6, mean 42.8 kg mm−2 (2−2½ on the Mohs scale). The density measured by pycnometry is 3.22 g cm−3 (Ma et al., 1980). The calculated density from the empirical chemical formula is 3.32 g cm−3. The compatability index gives 1 − (Kp/Kc) = −0.041 (good). The empirical formula (based on 36 O a.p.f.u) of tangdanite is Ca2.05Cu9.08(As1.03O4)4(S0.63O4)0.5(OH)9·9H2.04O. The simplified formula is Ca2Cu9(AsO4)4(SO4)0.5(OH)9·9H2O. The strongest five reflections in the X-ray powder-diffraction pattern [d in Å(I) (hkl)] are: 4.782(100) ( 1 1), 4.333(71) (6 0 2), 5.263(54) ( 0 2), 3.949(47) (8 0 2) and 2.976(46) ( 1 1). The unit-cell parameters are a = 54.490(9), b = 5.5685(9), c = 10.4690(17) Å, β = 96.294(3)o, V = 3157.4(9) Å3, Z = 4. Its structure was solved and refined in space group C2/c, with R = 0.110.

Household livelihood vulnerability to mining in Zambia's Solwezi copper mining district

2021 ◽  
pp. 101032
Author(s):  
Xavier Takam Tiamgne ◽  
Felix K. Kalaba ◽  
Vincent R. Nyirenda
Keyword(s):  
Copper Mining ◽  
Mining District ◽  
Household Livelihood

scholarly journals Land use and cover change dynamics in Zambia's Solwezi copper mining district

2021 ◽  
pp. e01007
Author(s):  
Xavier T. Tiamgne ◽  
Felix K. Kalaba ◽  
Vincent R. Nyirenda
Keyword(s):  
Land Use ◽  
Copper Mining ◽  
Mining District ◽  
Change Dynamics ◽  
Land Use And Cover
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