Fluorite

M

0 for sale

Help improve this recordNo owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.

The lower portion of this specimen consists of corroded yellowish fluorite and a little micro-crystallized barite of a cream color, and the upper part of large cubes of purple fluorite, the summit of which is well defined and topped by small calcite crystals. The lower portion is a bit corroded. A possible explanation is that the lower part was formed by simultaneous crystallization of fluorite and barite and that competition between the two impeded the development of well defined crystals, while the upper part was formed from crystallization of fluorite alone and that occurred later (hence the difference in color). A later influx of fluid corroded and partially dissolved the barite on the lower part without attacking the fluorite.