Race in Newport, Oregon. 79.07% of people are white, 0.80% are black, 0.98% are asian, 1.52% are native american, and 1.37% claim 'Other'. 11.28% of the people in Newport, Oregon, claim hispanic ethnicity (meaning 88.72% are non-hispanic).
The diameter of a kimberlite pipe at the surface is typically a few hundred meters to a kilometer (up to 0.6 mile). Kimberlites are the most important source of primary diamonds. Many kimberlite pipes also produce rich alluvial or eluvial diamond placer deposits. However, only about 1 in 200 kimberlite pipes contain gem-quality diamonds.
Some diatremes contain kimberlite, a peridotite that contains a hydrous mineral called phlogopite. Kimberlite may contain diamonds. Dikes are usually tabular bodies that may radiate from the central vent of a volcano or from a volcanic neck (see Figure 6). Not all dikes are associated with volcanoes, but they can be distinguished by their discordant relationship with the structure of the country rock that they cut across.