Marcasite

Marcasite is a mineral composed of iron sulfide (FeS₂) and forms in a crystalline structure. It is often mistaken for pyrite due to their similar appearance and metallic luster. Marcasite commonly occurs as tabular or pyramidal crystals, aggregates, or as nodules.

Marcasite typically forms in sedimentary environments, such as marine or lacustrine (lake) sediments, where it crystallizes from solutions rich in iron and sulfur. It can also form in hydrothermal veins, where hot fluids deposit minerals in fractures and cavities within rocks.

Marcasite is found in various locations around the world. Notable deposits can be found in Germany, Russia, China, Peru, Mexico, and the United States.

Metaphysically, marcasite is believed to enhance mental clarity, concentration, and memory. It is often used to stimulate creativity and aid in problem-solving. Some believe that marcasite can help overcome shyness and boost self-confidence. As with any metaphysical properties, individual experiences may vary, and it's important to trust your intuition when working with marcasite or any other crystal.