Dims: 2.5 x 1.3 x 0.8" (6.4 x 3.3 x 2.0 cm)
Wt: 1.82 oz. (51,6 g)
This large thumbnail specimen consists of a partial crystal of Bytownite, a variety of Plagioclase feldspar. It appears to be considerably damaged, possessing several conchoidal fracture surfaces, but most of these appear to be slightly worn, so I cannot tell whether they occured prior to or after mining. The piece shows visible but indefinite triclinic prismatic form- a few definite, striated faces are quite obvious, but an actual form cannot be determined. It has a pale, dull-yellow coloration and a luster that ranges from dull waxy to pearly, and is transparent and dimly to moderately clear. There is no host or base material present.