Mina Valencia, Guanajuato, Mexico

First Recorded Location

15.8 x 8 x 5.1 cm
6.2 x 3.1 x 2 in

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K₂Ca₄Al₂Be₄(Si₂₄O₆₀)•(H₂O)

A complex specimen with an underlying matrix composed of the Valencianite which is considered a variety of Adularia which is considered a variety of K-Feldspar. There is a note on the mindat page for Valencianite that a recent study suggests it may be an additional species in the K-Feldspar group.

Condition: Very Good to Excellent

Flaws: Only along the edges of the specimen are there any incomplete crystals.

This mineral is also found in the following galleries: Minerals From Mexico | Cyclosilicates | Tectosilicates | Quartz | Sulfides and Sulfosalts | Rare Minerals | Minerals Priced Between 50 and 99 Dollars