Mineral Specimen #3533 Vesuvianite Variety Idocrase with Hyaline Opal, Quartz and Calcite
Sierra de la Cruces, Coahuila, Mexico
Ex, Robert Gannon
Well formed Vesuvianite crystals which have a high luster are scattered across this specimen. The color is mostly brown but there are a couple of faces which are brownish olive green. The Vesuvianite was acid etched from enclosing Calcite some of which is still extant and is a light pinkish color. On the matrix, there is a coating of Hyaline Opal which is not noticeable until exposure to SW when it fluoresces bright green. There are several surfaces on the matrix which are covered with a druze of small squat white to clear Quartz crystals.
The specimen is in fairly good condition except some of the larger crystals have incomplete damaged areas.
From the Robert Gannon collection
9 x 6.4 x 4.4 cmLargest XL is 12 x 10 x 8 mm
This mineral is also found in the following galleries: Minerals From Mexico | Sorosilicates | Tectosilicates | Quartz | Fluorescents | Minerals Priced Between 25 and 49 Dollars