"Rock Specimens"

Silvery, paragranite and muscovite-rich with medium garnet crystals.

Sawn and lacquered slab showing thinly bedded truncated layers in a well-cemented sandstone. Large hand specimen.

Shows porphyritic texture in a fine dark matrix abundant large feldspar phenocrysts. Hand specimen.

Deformed pebbles in a metamorphased conglomerate. Large sawed and lacquered specimen.