Rare-earth element distribution patterns in metasomatites of Eastern Kazakhstan gold-ore deposits

Mineralogical Studies in Assisting Beneficiation of Rare Earth Element Minerals from Carbonatite Deposits

Rare earth elements (REE) are either housed in exotic REE minerals that sporadically populate the host rock or they occur as ionic substitutions in the crystal structure of existing rock-forming minerals. The genesis of REEs in carbonatite rocks can result in intricate mineralogical textures between REE minerals, host rock minerals, and minerals formed by later processes. Upfront mineralogical ...

Formation of carbonatite-related giant rare-earth-element deposits by the recycling of marine sediments

Carbonatite-associated rare-earth-element (REE) deposits are the most significant source of the world's REEs; however, their genesis remains unclear. Here, we present new Sr-Nd-Pb and C-O isotopic data for Cenozoic carbonatite-hosted giant REE deposits in southwest China. These REE deposits are located along the western margin of the Yangtze Craton that experienced Proterozoic lithospheric accr...

The Spatial and Temporal Distribution of the Metal Mineralisation in Eastern Australia and the Relationship of the Observed Patterns to Giant Ore Deposits

ions of the existing features. Some algorithms, like k-means, simply partition the feature space. Other algorithms, like single-link agglomeration, create nested partitionings which form a taxonomy. Another possibility is to learn a graph structure between the partitions, as in the Growing Neural Gas. The quality of the clustering depends crucially on the distance metric in the space. Most tech...

Gold Distribution in Porphyry Copper Deposits of Kerman Region, Southeastern Iran

Calculation of Rare Earth Element Patterns in Magmatic Fluids: Evidence for Origin of the Lake George Sb-Au-W-Mo Ore Deposit, New Brunswick, Canada

This contribution illustrates the procedures of calculating rare earth element (REE) patterns of magmatic fluids in equilibrium with granitic melts. These patterns can then be compared to those of altered and (or) mineralized rocks in order to investigate the source of the ore-fluids. This technique is applied to the Lake George Sb-Au-W-Mo mineral deposit, New Brunswick, Canada. The results sug...