Metamorphic

Rock type: 
Age: 
2000 millions years

Migmatized quartz-biotite schists. Srednegudzhal'skaya series. Thickness - 1200-1400 metres. Absolute definition of age - no. Fossil - no. Pr1gd2.

Rock type: 
Age: 
2000 millions years

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. 

Rock type: 
Age: 
2000 millions years

Tectonic fault zone in quartzites. Srednegudzhal'skaya series. Thickness - 1200-1400 metres. Absolute definition of age - no. Fossil - no. Pr1gd2. Spectral analysis: Ag - 0.04-0.1 g/t, As - 0,003%, Cu - 0,0025 - 0,008%, Bi - 0,00013%, Co - 0,0013 - 0,003%, Cr - 0,008 - 0,013%, Li - 0,0025 - 0,004%, Mn - 0,004 - 0,08%, Mo - 0,00025 - 0,0004%, Ni - 0,0025 - 0,008%, Pb - 0,0008 - 0,0013%, Sn - 0,00025%, V - 0,008 - 0,018%, W - 0,0013 - 0,01%, Zn - 0,006%, Au - 0.006 g/t

 

Rock type: 
Age: 
2100 millions years

Brumadinho Soup Formation. Iron Ore, BIF.

Rock type: 
Age: 
2000 millions years

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%.

Rock type: 
Age: 
86 millions years

Russia, Sakhalin, Chekhov peak. Quartzites, hematite quartzites, slates. Green shale formation. Krasnosel'skaya metamorphic series. Upper Cretaceous. asK2kr.

Rock type: 
Age: 
510 millions years

Sardinia, Monte Corrasi. Low Paleozoic terrigenous succession. Metasandstones quartzites and phyllites with alternating interlayered acid metavolcanic rocks. Cambrian?

Rock type: 
Age: 
480 millions years

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?

Rock type: 
Age: 
480 millions years

Sardinia, Spiaggia della Torre. Micaschists and paragneisses with garnet-oligoclase paragenesis. Paleozoic?

Rock type: 
Age: 
3800 millions years

Russia, Amur Region. Gneiss biotite-amphibole. Diffused interspersed pyrites. Mogochinskaya series. Granulite facies of metamorphism. Consist: amphibole 2-25%, biotite 1-15%, hypersten 0-15%, clinopyroxene 0-5%, plagioclase 20-60%, quartz 15-30%, K-spar 0-53%. Accessory: apatite, zircon, monazite, sphene, rutile, pyrite, magnetite. AR1Im