Sandstone slab, large Pyrite with iron causing the orange

with iron causing the orange coloration

The  different types of chlorite inclusions are colored by other trace elements to produce muted tones of green

The quartz in this specimen initially grew colorless

Approx weight: 33g

the aragonite has formed more botryoidal growth composed of a blade-like structure

Sandstone slab, large Pyrite with iron causing the orangeApprox size: 7 x 5 5 8" (12mm thick) Approx weight: 650g (1. 4lb) The display side of the slab is polished; the reverse is unfinished and may have saw marks, uneven parts, or paler color. This flat polished slab of picture sandstone is made from Arizona Sierra sandstone sourced from central Arizona. Sandstone is a sedimentary rock composed of sand compacted and cemented together through geological processes, giving it a grainy texture. Sandstone with