Discover Top Posts Tagged with #schist

"Gneissoid contorted schist." Rocks and Rock Minerals. 1908.

Internet Archive

#rocks #mineralogy #pattern #art forms in nature #sinouos #gneiss #schist #nemfrog #1908 #early 1900s

Sculpture (schist) of the seated Buddha, made in the 2nd or 3rd century CE by an artist active in present-day Pakistan, then part of the Kushan Empire. The sculpture is representative of the Gandhara style, also known as Greco-Buddhist, which resulted from the fusion of Hellenistic Greek influences brought eastward by Alexander the Great's conquests with native artistic traditions of central and southern Asia.

Now in the Tokyo National Museum, Tokyo, Japan.

#art #art history #ancient art #Buddha #Buddhism #Buddhist art #Gandhara #Kushan #Kushan Empire #Greco-Buddhist #Greco-Buddhism #South Asia #South Asian art #sculpture #stonework #schist #Tokyo National Museum

Zebra Schist outcrop, Kangaroo Island, South Australia.

Photo ©️ landscapeofsa

#folds #geology #schist #zebra schist #outcrop #australia

Gandharan head of a Buddha (grey schist, 3rd-4th century AD)

from here

#buddha #gandhara #sculpture #antiquities #archaeology #schist

todays terrible comic, sliding in just in time (just like me, sliding in just in time to witness the end of loop-)

#outer wilds #hatchling #schist #my ocs #make a terrible comic day #this happened first visit to all these places in my playthrough. genuinely a running joke

’—“”₃₂₄₃—••—•²⁺••“”—’–’

This week's Member Box spotlight: Almandine Garnet -- the deep-red garnet most people picture when they hear "garnet.Fe3Al2(SiO4)3, a magnesium-free iron end-member of the pyralspite garnet series.This raw cluster comes from a schist host rock in Fujian Province, China. The crystals form classic rhombic dodecahedra (12- Chemical formula faced), sometimes modified by trapezohedra (24 faces) -- the most recognizable geometry in the mineral kingdom.

Member Box notes:

Formed under high pressure and temperature in metamorphic rock

- Mohs hardness 7.5 -- tough enough for industrial abrasive (sandpaper garnet!)

- Red color comes from ferrous iron substituting into the octahedral sites

- Distinguishes between almandine vs pyrope vs spessartine by exact iron/aluminum balance

- A classic starter stone for crystal system studies -- isometric, perfect symmetry

Fun geology fact: garnet-bearing schist is a pressure-temperature indicator. If you find crystals like these in the field, you know you're standing on rocks that were once buried 10 to 30 km deep. That's how old, dense collisional mountain belts become accessible at the surface.