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Mineral Specimen #4688    Siderite, Calcite, Iridescent Sphalerite

Panasquiera Mines, Panasquiera, Portugal

A stack of dark gray colored, bladed Siderite crystals which have grown over a central core of Sphalerite crystals. A few of the Sphalerite crystals peak through the Siderite and are black in color with a subtle purple iridescence. Long ridges of yellow/beige colored, spherical aggregates of curved, bladed Calcite crystals have grown on the Siderite and Sphalerite. On one side of the specimen, the Calcite almost completely covers the specimen but is sparse on the opposing side. In one place, there is a rounded, stack of these Calcite crystals.

Condition: Excellent

Flaws: Nothing Appreciable

From the Kirk Valuet collection

6.1 x 5.6 x 4.9 cm

$75 / Reserved

This mineral is also found in the following galleries: Minerals From Europe | Carbonates | Sulfides and Sulfosalts | Calcite | Minerals Priced Between 50 and 99 Dollars
This mineral is also found in the following galleries: Minerals From Europe | Carbonates | Sulfides and Sulfosalts | Calcite | Minerals Priced Between 50 and 99 Dollars