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Malachite stalactite from Katanga - Democratic Republic of the Congo.
Stone dimensions: 47mm x H : 185mm.
Weight with base: 682g.
| Malachite |
Chemical composition: Malachite is a basic copper carbonate, with the chemical formula Cu₂(CO₃)(OH)₂. It consists of copper, carbon, oxygen and hydrogen, and derives its intense green color from copper ions. Hardness: On the Mohs scale, malachite has a hardness of 3.5 to 4. Density: Malachite's density varies between 3.6 and 4 g/cm³, making it a rather dense mineral, especially due to its copper content. |
Malachite stalactites form in caves, mainly in copper-rich environments. This process occurs when copper-laden water seeps through cracks in the rock. As the water evaporates, it leaves behind malachite deposits in the form of stalactites. These elongated structures can grow very slowly.
Malachite was also used as a green pigment in art until the advent of synthetic pigments in the 19th century.
Why choose Le Monde Minéral?
Photos and video presentation
Detailed photographs and video allow the mineral to be observed precisely and appreciated from different angles.
Shipping generally within 24 hours
Orders are usually prepared and shipped within 24 hours (business days). Delivery can be made to your home address or to a pickup point.
Protective packaging
Each mineral is packed individually with protection adapted to crystal formations during transport.
Secure payment
Payment by credit card or PayPal, with installment payment available via PayPal.
Specialized mineral shop
Le Monde Minéral is an online shop dedicated to collectible minerals and regularly participates in mineral shows in the PACA region.
