Smoky quartz and black tourmaline cluster with hyalite

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Description

Smoky quartz and black tourmaline cluster with hyaliteLocale: Erongo Mountain, Namibia Approx dimensions: 3. 5 x 2. 5 x 2. 5" Approx weight: 320g This Erongo specimen features a cluster of black tourmaline (schorl) between two chunky smoky quartz crystals, with a heavy coating of hyalite on the base and wrapping the larger quartz crystal. The glossy schorl crystals grow in short prisms with the classic trigonal 'Mercedes' termination characteristic of Erongo material. Erongo smoky quartz typically grows

the whiter material is less reactive

The druzy is well-formed

and swirling agate patterns—though this one completely lacks the stalactitic growth forms common to this region

A lot of jaspers are actually rhyolite

and rhombohedral patterns can be seen in places

Sandstone with distinct layering like this is often called ‘picture stone’ because the layers can resemble a southwestern landscape

with small pyrite crystals sprinkled throughout

Option D has especially good zoned fluorescence (it is the example shown fluorescing

some color zoning is visible inside the red crystals

These specimens from the Tatatila region of Mexico are commonly accompanied smoky quartz

and coats the specimen under the brown

Just be aware sandstone is a porous rock that will soak up water over time if used in wetter terrariums