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Glittering
Stones >> Semi
precious stones >> Feldspar Rings
Semi Precious Stone Feldspar Rings
 The
feldspar group is a fairly large group with nearly 30 members
recognized, but only nine are well known and common. The feldspars
are a family of silicate raw materials which occur in igneous
rocks. There are many different members to the feldspar
group. Obviously, silica and oxygen form the base
for the group, but calcium, sodium, and potassium are also
present. One of these elements is typically dominant, but
most of the feldspars contain all 3 in unreliable
amounts. It is the proportions of these 3 elements which help
decide which specific feldspar is formed.
Feldspar minerals are essential mechanism
in igneous, metamorphic and sedimentary rocks, to such a degree
that the classification of a number of rocks is based upon
feldspar content.
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