Sodalite Crystal Pyramid Pyrite 5-inch surface)

5-inch surface)

It forms in the cores of granite pegmatites as large shapeless masses

Different aromatic fractions reach their release temperature at different points across the burn

scattering from microscopic layers in the feldspar

recognised only a century ago

Sodalite Crystal Pyramid Pyrite 5-inch surface)Sodalite deep navy veined with white, cut to four faces and an apex, the mineral kin of lapis lazuli: the blue without the gold. From Brazil, cut as a pyramid. It is a sodium aluminium silicate carrying chlorine in its lattice, and it gives its name to a mineral group; lazurite, the blue of lapis, is a member of that group, so the two are true kin. The white veining is calcite. Sodalite carries no pyrite, so there are no gold flecks the choice between