Report of a meeting held jointly by the Mineral Deposits Studies Group and the Applied Mineralogy Group of the Mineralogical Society, at Burlington House on 14 May, 1981.

This joint meeting adopted as its theme the central topic of fluids involved in mineralization, and 15 papers were presented. The emphasis was on aqueous mineralizing fluids in settings varying from granite-related tin-tungsten deposition to groundwaters involved in syn-sedimentary mineralization. Several speakers reported on studies involving or centred about fluid inclusions. Other subjects included hydro-thermal experimental investigations, mineralogy and wallrock geochemistry. For the most part, the speakers took a practical approach to specific fluid/rock systems, though not neglecting discussion of the broader concepts involved. In the case of fluid inclusion work, continuing advance in analytical procedure is bringing out ever greater detail of fluid chemistry, thus allowing a more direct examination of the problems of metal transport in aqueous systems.

Rankin & Alderton reviewed their study of fluid inclusions in quartz from SW England granites, emphasizing the relationship between the variety of inclusion types encountered and the thermal and mineralization history of the area. Improved identification of daughter minerals including unusual chloride phases by SEM and of minor elements in the fluids such as boron and tin by ICP analysis is now an important part of this work. Bull described the complex mineral paragenesis in veins related to minor granite bodies in the Gunnislake area of Cornwall, and related it to

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