 | | Journal (article/letter/editorial) | | precipitates of hydrothermal origin from the Central Indian Ocean b M. Halbach a,) , P. Halbach a , V. Luders...extinct vent field in the Central Indian Ocean. There are two kinds of silica-rich rocks: a jasper which is...typical chimney structures can be recognized in the jasper andror opalite samples, the textures rather suggest...sphalerite- and barite-impregnations within the jasper, however, are considered to have precipitated from...sulfur. The oxygen isotope signals of some pure jasper concentrate samples indicate that the mean formation |  | Halbach, P., Blum, N., Münch, U., Plüger, W., Garbe-Schönberg, D., Zimmer, M. (1998) Formation and decay of a modern massive sulfide deposit in the Indian Ocean. Mineralium Deposita, 33 (3) 302-309 doi:10.1007/s001260050149 | Journal (article/letter/editorial) | | decay of a modern massive sul®de deposit in the Indian Ocean Received: 20 October 1997 / Accepted: 4 December...®rst massive sul®des were recovered from the Indian Ocean ¯oor, north of the Rodrigues Triple Junction...polymetallic deposit is situated in the fourth Central Indian Ridge segment, close to the rift axis; it is hydrothermally...active. The deposit appears to be typical of mid-ocean ridge massive sul®de occurrences but is in a phase...setting, mineral zonation, dierent sul®de types and stages of formation of the ``Sonne Sul®de Field'', which |  | | Journal (article/letter/editorial) | | features of sulfide chimneys from the MESO zone, Central Indian Ridge Ute Munch ¨ a a,) , Norbert Blum...most mid-ocean ridges. However, despite various efforts there is only one hydrothermal field recognized...recognized so far in the Indian Ocean. Products of former hydrothermal activity were sampled in the fourth segment...segment of the Central Indian Ridge ŽCIR. north of the Rodriguez Triple Junction ŽRTJ., near 238S. The...The mineralized area, referred to as ‘MESO zone’, covers an area of about 0.6 km2 , and is located at a |
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