amazonstone: Quick Facts

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Also Known As	amazonite

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Figure 5: Minerals displaying good crystal form. Although such occurrences are in the minority, they receive considerable attention because of their beauty and because they reflect the symmetry content inherent in the external form and in the internal structure of the mineral. (From top) wulfenite, PbMoO4, from Mexico; rose quartz from Minas Gerais state, Brazil; microcline feldspar, KAlSi3O8, the greenish blue variety known as amazonite, with smoky (dark gray) quartz, from Colorado, U.S.

A sample of amazonite, a greenish blue variety of microcline feldspar, with smoky (dark gray) quartz. Microcline feldspar is an example of a mineral that displays good crystal form.

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Topics

gemstone microcline garnet jade opal topaz turquoise jasper jadeite zircon amethyst kyanite

Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.

(Bed) Rocks and (Flint) Stones