"WardsSci000478"

Large, black, rounded tektite, 1 1/2". Thailand.

1 pound of black sand packaged in a heat-sealed bag.

Massive, chlorite-rich.

Pink/gray coarse carbonate rock.

Foliated biotite, coarse, silvery gray with quartz-feldspar bands.

Fine, common limestone; massive, and will fizzle with HCl.

Light pink, massive, crystalline, translucent.

Ward's® highest quality and purest mineral offerings.

White and black bands of quartz, feldspar, and biotite; typical foliation.

Feldspar group; white-to-gray cleavages of sodic plagioclase; some show twinning.