Siderite & Quartz – Mésage, France | Ref. 57

Specimen description

This association of siderite and quartz is dominated by a large, well-defined siderite crystal, accompanied by quartz crystallization covering part of the specimen. The siderite displays brown-olive tones with slight greenish nuances, whose appearance varies depending on the viewing angle and lighting.

About siderite

Siderite is an iron carbonate with the chemical formula FeCO₃ and belongs to the calcite group. It can display a fairly wide range of colors, particularly brown and greyish tones, and sometimes greenish hues.

Provenance

This specimen comes from Mésage, Isère, France and was collected in 1999.

Dimensions and presentation

Stone dimensions: 75 × 50 × 65 mm.

Weight with base: 240 g.

The specimen is displayed on a base.