| Quartz
comes in a variety of colors. From
Pale Yellow to Brown to Smoky Shades.
In some the color is enhanced to
a Beautiful Yellow Green.
Rock
crystal may contain two-phase inclusions
often gas or carbon dioxide but
several minerals give rock crystal
an unexpectedly exotic appearance.
Reddish or golden rutile crystals
in hair-like form produce rutilated
quartz. Other long and slender inclusions
may include tourmaline or actinolite.
In some cases the actinolite is
sufficiently green to color the
host. Other inclusions are blue
anatase, ilmenite, boulangerite,
giessenite, heyrovskyite, brownish
yellow goethite, lepidocrocite,
reddish hematite, chlorite, pyrochlore,
and spessartite. Chyrsocolla or
dumortierite may produce blue or
brown colors.
The
Mineral finds many uses in industry
in the Building trade glass making
and as a flux in smelting. |
