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Mineral Specimen #1177    Fluorapatite on Quartz with Unidentified Green Mineral

Panasqueira Mines, Panasqueira, Covilha, Castelo Branco District, Portugal

11.4 x 4.9 x 4.7 cm
4.5 x 1.9 x 1.9 in


Well formed, hexagonal Apatite crystals are perched on the surface of this Quartz crystal. Actually, there appear to be three Quartz crystals. The main crystal which is a typically shaped Quartz crystal. Near the termination of this crystal, there is a second crystal which consists of a similar termination which is parallel to the main crystal. These two crystals may actually be twinned. This second crystal merges with the main crystal. On the edge of the base of the second crystal's termination, there is an unusual, double terminated, tabular Quartz crystal. It is on this crystal, where a number of Apatite crystals are perched. The Apatite crystals are clear to milky white. Many have inclusions of the green material, but when included in the Apatite, the color becomes a light teal. The Apatite crystals have good luster. The largest Apatite crystal is 7 mm across and 4.5 mm long. At first, I thought the green material was Chlorite. However, the color is not quite right and under a loupe, the material is composed of sphreical masses. The specimen is in good condtion. Some of the green material has scratched off and there is some minor internal fractures in a couple of the Apatite crystals. There is also some small Ferberite and Mica crystals on the surface of the Quartz.

From the Vivian Randall collection

This mineral is also found in the following galleries: Minerals From Europe | Phosphates | Quartz | Minerals Priced Between 50 and 99 Dollars