magnesite - teaching hand specimen of earthy magnesium carbonate

$ 7.50

Magnesite, MgCO3

Magnesite, magnesium carbonate, can be earthy or crystalline. This earthy magnesite was formed through hydrothermal alteration of Miocene (?) lake beds, though it can also form in irregular veins and masses through the alteration of serpentine by water containing carbonic acid. Some of these specimens show faint bedding. 

The Kramer Hills magnesite deposit was explored in the 1930s by the Ball (Red Seal) Chemical Company. A number of prospects have been opened since then, but it appears that commercial production was small. It has a commercial application in the manufacture of brick and furnace linings and as a source of magnesium. This magnesite occurs in association with a tan chert that we often have in stock.

These specimens ship in a small flat rate box unless combined with other purchases.

Select a specimen: You can select a specimen by telling us what is in the photo with it, a blue or black and silver pen, a black mechanical pencil or one of those plus some number of coins, or you can let us make the selection.

Making multiple purchases? Click on the "combine shipping" button in the shopping cart. We'll send an invoice with combined shipping. A link in that invoice will bring you back to checkout, no hassle.