Antiperthite

    #diorite

    #kimberlite

    #serpentinite

    #syenite

    #basalt

    #sign of elongation

    #carlsbad twinning

    #antiperthite

    #virtual microscope

    #crinoidal limestone

    #staurolite schist

    #porphyritic basalt

    #primary follicle

    #secondary follicle

    #triada portal

    #osteona

    #osteoclastos