Epidote with well-formed prehnite sphere

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Epidote with well-formed prehnite sphereLocale: Imilchil, Midelt Province, Dra Tafilalet Region, Morocco Approx dimensions: 2. 5 x 1. 5 x 1. 25" Approx weight: 115g After some sleuthing on Mindat I was intrigued to discover the spherical formation on this specimen is prehnite. I actually didn't find one matching this specimen anywhere; all examples were translucent and not opaque. I suspect it could be a feldspar pseudomorph. Prehnite typically does not fluorescebut this one does. Prehnite

These arches are made by drilling a hole through a chunk of sandstone and sandblasting the material into a smoothed arch

Calcite has grown in a cross-hatch of thin white blades that have also formed fine lines across the surface of the quartz

There are also calcite rhombohedrons and tabular crystals in the mix

It will fluoresce and phosphoresce using a 365nm UV light

Approx weight: 377g

I have not been able to find info on common associates of this material) that appears to have calcite underneath

Cowabunga dude

has the Mercedes termination characteristic of the Erongo region with intricate growth patterns across the faces of the tip

Approx weight: 85g

This is one of my favorite specimens of Erongo hyalite

but turns visibly greenish yellow when exposed to the UV in sunlight

in the case of option G