Malachite sunbird Malachite sunbird The malachite sunbird ("Nectarinia famosa") is a small nectarivorous bird found from the highlands of Ethiopia southwards to South Africa. The pollinate many flowering plants, particularly those with long corolla tubes, in the Fynbos. The sunbirds are a group of small Old World passerine birds, and are placed within the family Nectariniidae, which is found across Africa, the Middle East and into South-east Asia. Also called green sugarbird. The malachite sunbird has two subspecies. The nominate "N. f. famosa "occurs mainly in South Africa, Lesotho and western Swaziland, although its range just extends into southern Namibia and Zimbabwe.
Mineral they help to define the limits of what constitutes a mineral proper. The formal Nickel (1995) definition explicitly mentioned crystallinity as a key to defining a substance as a mineral. A 2011 article defined icosahedrite, an aluminium-iron-copper alloy as mineral; named for its unique natural icosahedral symmetry, it is a quasicrystal. Unlike a true crystal, quasicrystals are ordered but not periodic. Minerals are not equivalent to rocks. A rock is an aggregate of one or more minerals or mineraloids. Some rocks, such as limestone or quartzite, are composed primarily of one mineral—calcite or aragonite in the case of limestone, and