Science

Messelite is a mineral with formula Ca2(Fe2+, Mn2+)(PO4)2·2H2O. It is a triclinic-pinacoidal mineral containing calcium, hydrogen, iron, manganese, oxygen, and phosphorus. It was discovered in Germany…

A seashell or shell of the sea, also commonly known as a shell, is a strong exoskeleton of marine mollusks such as snails, bivalves, and…

Cupellation is the process of recovering precious metals from lead by melting the alloy in a cupel and oxidizing the lead by means of an…

Tetrahedrite is composed of two-component minerals: tetrahedrite, the end member rich in antimony, and tennantite, the end member rich in arsenic. It is a mineral…

The Waelz process is one of the most efficient technologies, in terms of capacity and quality, able to recover nearly 90% of zinc content from…

Enargite, mineral sulfosalt, copper arsenic sulfide (Cu3AsS4), which is sometimes a significant copper ore. Enargite is named in reference to its distinctive flawless cleavage, for…

Data Definition Language (DDL) is the language of data creation; it is what we use to describe tables, indexes, views, partitions, and so on. For…

Zinc is found in the earth’s crust primarily as zinc sulfide (ZnS). Zinc smelting is the process of converting zinc concentrates (ores that contain zinc) into…

A Data Definition Language (DDL) or Data Description is a programming language used to construct and change the database object structure within a database. DDL…

Covellite, also known as ‘covelline’, is a mineral of cupric sulfide (CuS) and is copper ore. This indigo blue mineral is generally a secondary mineral…

Smelting is the process by which a metal is obtained at temperatures beyond the melting point from its ore. It is a process of applying…

The Cotswolds (/ˈkɒtswoʊldz/ KOTS-wohldz, /-wəldz/ -⁠wəldz) occupies a vast region of approximately 800 square miles and stretches across five counties. It is a region in…