MF26M5: Scalenohedral crystal of Calcite in a geode of Quartz (amethyst). The crystal has three channels that coincide with the acute edges and these contain thin growths of Hematite microcrystals. Within the crystal there is a very well defined inclusion of red Hematite. The sample is from a new quarry in the well known region of Artigas.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Rivista Mineralogica Italiana’ on page 138 in number 2009/2.
Norte Quarry, Catalán Grande area, Artigas Department  Uruguay (06/2008)

Specimen size: 7.1 × 7 × 6.2 cm = 2.80” × 2.76” × 2.44”

Main crystal size: 7.1 × 2.9 cm = 2.80” × 1.14”