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Hace 4 días · During the porphyry ore formation, the high-temperature acidic hydrothermal fluids interact with the surrounding rocks, leading to the formation of alteration haloes that are enriched in secondary minerals such as epidote, sericite, chlorite, albite and K-feldspar (Sillitoe 2010).
1 de may. de 2024 · In addition, other discoveries in the ~100- × 50-km province include an Au-Ag-base metal epithermal vein deposit as well as an Mo-Cu porphyry deposit, styles associated with porphyry copper systems (Sillitoe, 2010) that are common across the Central Asian orogenic belt.
4 de may. de 2024 · Textural evidence, such as crosscutting relations and change from sinuous A-type to straight B-type veins (Figs. 2 and 3), suggest a consecutive formation and the change from ductile and lithostatic to brittle and sub-lithostatic conditions (Monecke et al. 2018; Sillitoe 2010).
29 de abr. de 2024 · Modified after (Sillitoe, 2010) Figure 7: LVA field for a porphyry deposit. Top Left: The LVA field along A‐A’ cross‐section in Figure 6. Top Right: Estimates obtained by domaining into four quadrants with a constant variogram for each.
1 de may. de 2024 · Economic Geology | 119 | 3 | May 2024. On the cover: Geologic map of the Powell syncline and Powell fault and equal-area, lower-hemisphere stereonet projections of structural measurements from the Powell syncline. Â The geology and ore deposits of this region are described in the paper by Schofield et al. in this issue.
1 de may. de 2024 · Furthermore, previous fluid inclusion studies of Tomnadashan (Naden et al. 2010) have identified broad similarities to fluid inclusion populations from porphyry Cu–Mo deposits (NaCl > 35 wt%, homogenization temperatures >300°C; Sillitoe 2000).
28 de abr. de 2024 · El América terminó con la racha de seis victorias consecutivas del Cruz Azul, al vencerlo 1-0 con gol del colombiano-mexicano Julián Quiñones, el sábado en el estadio Azteca en la continuación de la octava jornada del torneo Clausura-2024 del fútbol mexicano....
