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Author(s):  
Kelong Yu ◽  
Guangming Li ◽  
Junxing Zhao ◽  
Noreen J. Evans ◽  
Jinxiang Li ◽  
...  
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2021 ◽  
Vol 82 (3) ◽  
pp. 52-54
Author(s):  
Hristiana Georgieva ◽  
Rossen Nedialkov

The K-silicate-sericitic alteration is one of the well-preserved hydrothermal alterations at the Elatsite porphyry-copper gold deposit (PCGD). It is observed in all lithological varieties, but shows asymmetric distribution of the secondary products. The alteration is genetically related with the occurrence of the K-silicate and Na-Ca-K-silicate alteration. The K-silicate-sericitic alteration has simple mineral content which includes mainly chlorite and sericite. The temperature of formation of the alteration is estimated between 250–268 °C.


2021 ◽  
Vol 112 ◽  
pp. 103543
Author(s):  
Nora A. Rubinstein ◽  
Eduardo O. Zappettini ◽  
Anabel L.R. Gómez
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Author(s):  
Shokouh Riahi ◽  
Abbas Bahroudi ◽  
Maysam Abedi ◽  
Soheila Aslani ◽  
David R. Lentz

2021 ◽  
Vol 5 (1) ◽  
pp. 27
Author(s):  
Christine Bauer ◽  
Rebecca Wagner ◽  
Beate Orberger ◽  
Markus Firsching ◽  
Christiane Wagner ◽  
...  

X-ray transmission (XRT) and computed tomography (CT) was used on five samples from the Niaz porphyry Cu–Mo deposit in Iran, representing different alteration zones. Analysis of three-dimensional CT data revealed structural information and groups of elements with low, medium and high attenuation, which were assigned to minerals previously determined by scanning electron microscopy. Thus, the mineralization can be located, and the metal/waste ratio can be estimated, leading to more precise ore body modelling and process parameter determination. CT is useful for selected samples as it is time consuming. XRT can be used as real-time process on conveyor belts.


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