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Sn = Tin
Ta = Tantalum
Ta = Tantalum
Tin (Sn) is a tin oxide mineral and the principal source for tin metal. It is generally opaque but can also be shining black or brownish-black.
Ta = Tantalum
Ta = Tantalum
Ta = Tantalum
Tantalum (Ta) is part of a group of minerals that contain variable amounts of tantalum. Tantalum is a greyish silver, heavy and very hard metal that often occurs associated with fractionated pegmatites.
Nb = Niobium
Ta = Tantalum
Nb = Niobium
Niobium (Nb) is a mineral it is a light grey, crystalline, and Niobium is often found in the minerals pyrochlore and columbite.
Aquamarine
Ta = Tantalum
Nb = Niobium
Aquamarine (3-10%) Aquamarine is the mineral Beryl, a Beryllium Aluminum Silicate with the general chemical formula Be3Al2(Si16O18)