Deposit Area: Arizona, United States
Crystal System: Monoclinic
Hardness:3 1/2 - 4
Fracture: Subconchoidal to uneven, brittle
Streak: Pale Green
Luster: Adamantine to silky
Malachite is strongly known to also be apart of the monoclinc crystallization which is known to have three crystallographic axes of unequal lengths. One of these axes are commonly known to be formed to the right of the other two, while the other two axes are not considered to be perpendicular to one another. In several case, the crystallized structural formation has one twofold axis of symmetry. Almost all minerals are commonly known to be crystallized within the monoclinic crystal formation than any other minerals within the earth, and its mantel. Malachite is also known to be formed in either a radiating or flattened formation but can also show its bands when polished or cut in half. Other areas of formations where malachite can be formed is within chlorargyrite, which is classified as a silver oxide. This type of silver oxide mineral is known to be massive that can also form a crust, and coating within its geological structure. Other areas it can appear is within hornlike masses which sometimes can be referred as horn silver. Malachite may also be formed within Atacamite that's named after the Atacama desert in Chile. Its mainly known to be formed under other oxidations of copper such as Malachite, and is also classified as copper chloride hydroxide.
Malachite is octahedrally coordinated to oxygen and (OH) groups, in which these octahedra are rather linked along the edge forming chains that run parallel to the C axis. These foremost chains are considered to also be cross-linked by triangular (CO3) groups Its physical property has distinct crystals that are uncommon, and are generally radiating fibres forming botryoidal or stalactitic masses. The cleavage of Malachite is generally perfect but can rarely be seen, and it also has a hardness 3 1/2 - 4.03. Its specific gravity is also considered to be between 3.9 to 4.03. Malachite is also a bright green mineral with its texture being like a silky luster in fibrous varieties, which also has a dull luster in earthy type. Malachite is also considered to be soluble in HCI with effervescence, and is recognized by its bright green color and botryoidal forms, that's commonly associated with azurite, cuprite, and native copper.