The optical effect appears to be due to reflections from inclusions of red copper, in the form of minute scales, which are hexagonal, rhombic, or irregular in shape, and are disposed parallel to the principal cleavage-plane. These inclusions give the stone an appearance something like that of aventurine, hence sunstone is known also as "aventurine-feldspar." The optical effect called shiller and the color in Oregon Sunstone is due to copper. The middle part of this crystal sparkles, and usually the color is darkest in the middle and becomes lighter toward the outer edges.
The feldspar which usually displays the aventurine appearance is oligoclase, though the effect is sometimes seen in orthoclase: hence two kinds of sunstone are distinguished as "oligoclase sunstone" and "orthoclase sunstone."
por ser uma potência com grande capacidade de exportação marítima, ter vários recursos e bom lucro. Outra opção é a facilidade que há em transportar pelo mar e os retornos que causa.
The immigrants at Ellis Island were treated more equally than those at Angel Island. ... The main ethnic groups that came through Ellis Island were English, Irish, Italian, and Polish. ANGEL ISLAND. Immigrants at Angel Island were not treated fairly.
The battle was a victory for the British and it proved to be a serious experience.The kind of victory they had was winning victory even tho Despite facing larger forces, better trained armies, and more weapons they till manged to win
