LAUMONTITE
Specimen lau-1

Dims: 2-3/8" x 1" x 3/4"

Wt: 14 g

Pine Creek Mine, Bishop, Inyo County, California, U.S.A.

Two 2-inch-long crystals of monoclinic Laumontite dominate this specimen from the well-known Pine Creek locality in California. These crystals intersect at their bases and are connected near their terminations by what I'm pretty sure is a thin plate of Calcite. They are fibrous and prismatic, and are yellowish in color, probably due to staining from what looks like a sealant that the crystals have been coated with to prevent dehydration decomposition. Several smaller crystals, along with some tiny, blunt Calcites infest the base area, and one of the crystals has a near-perfect termination, whereas the other's has been broken off. This is quite a good-quality specimen.

Dims: 3.8 x 0.4 x 0.4" (9.7 x 1.0 x 1.0 cm)

Wt: 6.1 g

Pine Creek Mine, Bishop, Inyo County, California, U.S.A.

This simple specimen consists of a single monoclinic prismatic Laumontite crystal. This crystal is generally in good condition, though I believe that another, partially-intergrown crystal was removed from it. It has a rather warped form, and appears to be made up of two intergrown crystals by itself. It has a dingy yellow coloration that is likely caused by a layer of protective lacquer that coats the crystal to prevent it from being dried out. Its color is actually a rather bright white and its luster is pearly. One of its prism faces is mostly covered with a crust made up of tiny calcite scalenohedrons, but the rest are clean. There is no host rock present on the specimen.