Mineral Specimen #6264 Hyaline Opal on Rutile with Minor Hematite
Novo Horizonte, Bahia, Brazil
4.4 x 1.8 x 2 cm
Here is a most unusual specimen where Hyaline Opal has almost completely covered Rutile crystals. The Hytaline has a glassy luster and a bubbly habit. The Ruitle crystals are in a parallel orientation due to epitaxial growth on Hematite. The location is famous for its Rutile crystals but this is such a rarity that Hyaline is not even listed for the location on mindat. Under SW, the Hyaline fluoresces green although not quite as vividly as from other locations.
Condition: Very Good
Flaws: Nothing Appreciable
This mineral is also found in the following galleries: Minerals From Brazil | Tectosilicates | Oxides and Hydroxides | Fluorescents | Minerals Priced Between 100 and 199 Dollars