Colorless calcite with dusting of red-brown iron Aquamarine 25 x 3 x 1

25 x 3 x 1

I haven't seen an example that looks quite so

This is a beautiful example of growth forms typical of this region

Ripples and flow patterns indicate water was involved in the deposition of the brown sandy-textured layered crust

with green coloration in some areas also caused by epidote

Colorless calcite with dusting of red-brown iron Aquamarine 25 x 3 x 1Locale: Santa Eulalia, Chihuahua, Mexico Approx dimensions: 4 x 3 x 1. 25" Approx weight: 388g This calcite specimen from Santa Eulalia has a layer of calcite druzy with several larger modified rhombohedral calcite crystals perched atop. The druzy is well formed, composed of interlocking calcite crystals. The piece appears finely dusted with cinnamon brown color: this is hematite which causes the red and brown coloration of the mineral. UV reactivity