A great specimen of yellow Mimetite Crystals! Cool little crystals cluster over the rock, with clear Hemimorphite crystals also visible. As with all minerals, it’s worth checking this one out with a loupe or magnifier to see the whole story. It’s like a little forest of minerals in there! Beaut collection piece from a well known locale.
La Ojuela Mine, Mapimi, Mexico.
10.5cm x 5.5cm x 5cm, 220g
A secondary mineral found in the oxidized zones of lead deposits. Usually found as small hexagonal prisms, often plain but may be modified, sprinkled on the matrix thinly to thickly. Its colour is quite variable, ranging from pale yellow to yellowish-brown to orange-yellow to orange-red, brownish, greenish, white and colorless.
A secondary lead mineral found in the oxidised zones of lead deposits. Typically found as green, yellowish, brownish, greyish or white barrel-shaped hexagonal prisms, in clusters or as druses on matrix. The individual crystals are often modified or etched, giving a hopper-like appearance. This lead chloride phosphate forms a complete series with Mimetite (lead chloride arsenate), and many specimens are intermediates between the two end-members.