Dims: 1.5 x 1.3 x 1.2" (3.8 x 3.3 x 3.0 cm)
Wt: 1.99 oz. (56.5 g)
Sceptre Claims, Emerald Lake, Yukon Territory, Canada
The twinned Microcline crystal that makes up this specimen is incomplete, but the associated damage is old, having occurred prior to mining. Where intact, it has good triclinic prismatic form and shows strong evidence of Mannenbach-Baveno twinning One can easily see the twinning plane on the most complete face. Its edges are relatively well-defined and its faces are often striated but clean and possess a dull pearly luster. The crystal has a pale yellow color that may be due to rust-staining and is translucent, showing small areas of transparence in between the internal cleavage planes and assorted inclusions and internal fractures. A patch of tiny, dark brown crystals are present- I believe that they are calcites with very heavy iron inclusions. There is no host rock, and the piece is hot-glued onto a flat acrylic base.