Gold in the sample from Porgera (along the left side of the sample) is intergrown
with fine dark gray silica-adularia.
(2) Beijing Key Laboratory for Precise Mining of Intergrown
Energy and Resources, China University of Mining and Technology (Beijing), Beijing 100083, China
This discrepancy may be ascribed to the structural complexity of this mineral which leads to the crystallization of different polytypes sometimes intimately intergrown
Mn-Fe carbonate is the most important gangue mineral within the orefield, and there are two types: (1) it occurs as fine-grained (<50 [micro]m) aggregates intergrown
with fine-grained sulfides (sphalerite, pyrite, chalcopyrite, and arsenopyrite) to form the laminar and disseminated textures (Figures 4(a)-4(c)), and (2) it occurs as coarse-grained (3~5mm) aggregates of overgrowing coarse-grained sphalerite, galena, chalcopyrite, and pyrite with banded and massive textures (Figures 4(d)-4(i) and 5(b)).
The strength of reduction roasted pellets is controlled by the rate of formation of intergrown
iron crystals, their abundance, and physical structure, while the bentonite binder will have little effect on pellet strength after roasting .
School of Metallurgy of Northeastern University, Key Laboratory of Ecological Utilization of Multi-Metal Intergrown
Ores of Education Ministry, Shenyang 110819, China
* A sample consisting of three intergrown
pearls with diameters of 3.18, 3.77 and 5.62 mm (1.83 ct total) was greyish purple with 'bronze'-coloured areas (Figure 11).
The 0.3 depth isobaths denote the front of dense intergrown
stands in the bay, whereas separate patches of P.
A: PCD is a synthesized, extremely tough, intergrown
mass of randomly orientated diamond particles in a metal matrix.
In addition, knots can be encased or intergrown
. The latter means that the grain grows toward the knot center.
The manganese minerals are very fine grained and are intergrown
with each other and gangue minerals.
Plagioclase ranges from (23.8% -45.6%) Microcline often intergrown
graphically and are sometimes perthitic with albite occurring as patchy perthite.