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or the formation of equally thin layers of secondary minerals due to hydrothermal or other alteration
Barite is a mineral with an interesting history
an iron ore mineral which provides an impressive contrast against the clear crystals
from the Upper Silurian age
Each of our fish fossil specimens has been expertly prepared and is 100% authentic and unrestored or repaired
Fluorite Sphalerite or the formation of equallyFluorite is one of the most variable of all crystalline minerals, occurring in shades of blue, green, purple, red and many other colors corresponding to their physical makeup and conditions when the mineral was formed. The name fluorite comes from its use as a flux, or chemical cleaning agent, in iron smelting and other metallurgy. Pure fluorite is clear, but most specimens have vivid color due to various impurities and are often fluorescent. With a
