This specimen features two main cubes, the larger being 2.9 cm along an edge. Internally, these crystals show colour zoning, easily visible at the right orientation. The crystals are sharp and have nice lustre. Strongly fluorescent under UV, as shown in the last photo. The specimen is in very good condition for the find – the two main crystals in are in excellent condition, and around the periphery there are incompelte crystals where this specimen was removed from adjoining crystals. A very fine Mandrosonoro fluorite!
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About These Madagascar Fluorites
Discovered in 2017, this Madagascar green fluorite is from Mandrosonoro, Ambatofinandrahana, Amoron’i Mania. The green varies in darkness from specimen to specimen, and the hue is reminiscent of the specimens produced at the Rogerley Mine (Frosterley, Durham, England).
The apparent colour of these fluorite specimens varies depending upon light source – these photos are adjusted to basic daylight, shade (same as all specimen photos on the website), and this is the lighting that brings out their colour the best. However, in actual daylight, these fluorites exhibit varying degrees of fluorescence, from faint to obvious blue (not as strongly as with Rogerley fluorites). Under UV lighting, they fluoresce bright blue-purple.
The Mandrosonoro fluorites are collected by local inhabitants and the quality of the first pieces I saw (in 2018) was very poor. On the whole, the quality of almost all pieces available to date has remained poor with lots of damage – the specimens in this update are of exceptional quality for the find.