Russia, Khabarovsk Territory, the valley of the creek Elovy. Quartzites with veins of quartz. Srednegudzhal'skaya series. Thickness - 1200-1400 metres. Absolute definition of age - no. Fossil - no. Pr1gd2. ICP quartz vein: Al - 6.69%, As - 3 ppm, Ba - 363 ppm, Be - 0.9 ppm, Ca - 0.52%, Cd - 10 ppm, Co - 114 ppm, Cu - 2.5 ppm, Fe - 0.91%, K - 2.68%, La - 8.1 ppm, Li - 13 ppm, Mg - 0.32%, Mn - 342 ppm, Na - 1.35%, Ni - 6 ppm, Pb - 49 ppm, Sc - 4.6 ppm, Sr - 92.6 ppm, Ti - 0.1%, V - 19 ppm, W - 530 ppm, Y - 11 ppm, Zn - 26.6 ppm, Zr - 23.7 ppm.
Khabarovsk Territory, Gujal river valley. Quartzites with veins of quartz. Srednegudzhal'skaya series. Thickness - 1200-1400 metres. Absolute definition of age - no. Fossil - no. Pr1gd2. Spectral analysis quartz vein: Ag - 0,000004%, As - 0,003%, Cu - 0,0025%, Co - 0,06%, Cr - 0,025%, Li - 0,01%, Mn - 0,03%, Mo - 0,0025%, Ni - 0,008%, Sb - 0,0025%, V - 0,003%, W - 1%, Zn - 0,004%.
Sardinia, Spiaggia della Torre. Micaschists and paragneisses with garnet-oligoclase paragenesis. Paleozoic? Micaschists and paragneisses with garnet-oligoclase paragenesis. With quartz veins and lenses. Paleozoic?
Dyke granodiorite porphyry. Sikhote-Alin series of Eocene subintrusions. Eocene. The dyke has a length of about 800 m. The maximum thickness is 150 m. It has a submeridional strike (Az. 350 degrees). Az pad. 80 degrees. Angle of 70-80 degrees. Wedges out on both flanks splitting into several small bodies. Pledged by a series of faults, traceable after wedging out of the dyke in siltstones. In the upper part, granodiorites are intensively weathered to a completely disintegrated weathering crust.
Dyke diorite porphyrite. Sikhote-Alin series of Eocene subintrusions. Eocene. The thickness of the dikes varies from 1 to 20 m, sometimes reaching 70 m, the length rarely exceeds 500 m. The studied contacts of the dikes have steep angles (70-80 degrees) of incidence, and contact alteration are expressed in weak keratinization of rocks to a width of 5-10 cm. Consist: phenocrysts 20-25% - plagioclase, hornblende; the bulk 75-80% - plagioclase 30-35%, dark-colored mineral (hornblende?) 15-20%, quartz up to 1%. Accessory: apatite, sphene. δπ₽2