POWELLITE
Specimen pow-4

Dims:2.1x1.6x1.2" (5.3x4.1x3.0 cm)

Wt: 2.2oz. (63g)

Nasik, Maharashtra st., India

This wonderful little specimen consists of a double terminated crystal of powellite resting upon a mass of intergrown powellite and natrolite crystals. Some of the needles of natrolite grow up through the powellite crystal and extend 1.0" (2.5cm) above it. This specimen fluoresces brilliant yellow under both short and long wave ultraviolet light. There is no visible damage to this specimen; it is affixed to a clear acrylic base with sticky-tack.

Dims: 0.76x0.64x0.45" (1.93x1.63x1.14cm)

Wt: 30.5ct (6.10g)

Nasik, India

This powellite specimen is an incomplete crystal, showing only two good crystal faces, one side that looks like a cleavage plane, and the remaining surfaces, while not looking like damage, they are not flat crystal faces but rather have an irregular surface where the growth pattern was likely interrupted by something in the way. This specimen glows a pretty yellow color under shortwave ultraviolet. The powellite is transparent, but has so many internal fractures as to appear only translucent.

Dims: 1.51x0.98x0.83" (3.83x2.48x2.12cm)

Wt: 0.89oz (25.1g)

Nasik, India

This is a good specimen of powellite. The crystal is incomplete, showing only three faces. The remaining surfaces appear to be growth patterns or possibly contact imprints, except for an area of damage on the bottom. There is a very nice (unfortunately incomplete) arrowhead face on one side, which suggests that the complete crystal would have had a similar shape. The crystal faces show distinct striations. The powellite is transparent and pale yellow, with many internal fractures. And of course this powellite fluoresces a bright yellow under UV (very bright with long wave).

Dims: 0.80x0.65x0.40" (2.02x1.64x1.01cm)

Wt: 0.25oz (7.0g)

Nasik, India

This specimen of powellite is transparent and nearly colorless, with the merest hint of yellow for a color. Only two surfaces are original crystal faces, and these show relatively deep striations and a vitreous luster. All other surfaces look like fracture. The interior is also cloudy due to internal fractures. This specimen fluoresces a brilliant yellow under both LW and SW UV (but brighter under LW).