Origin Of Quartz
Quartz is the common mineral
found in the earth continental crust.
Quartz consists of hexagonal crystal structure
which is made of trigonal crystallized
silica with hardness. It is founded with
the hardness of 7 on the Mohs scale and
Density is 2.65 g/cm³. The common
shape of the quartz will be twinned, distorted
or massive that the part of the shape
is apparent from the mined specimen. It
consists of hollow rock with a core lined
of bed crystals. Quartz is also the common
material found in the earth surface with
hexagonal crystal structure.
The word quartz comes from
the German Quartz which is Slavic origin.
It is also said that the origin is from
the Saxon word. In Australian Aboriginal
mythology, quartz is identified as the
mystical substance maban. The roman naturalist
Pliny believed that quartz is the permanently
frozen ice. He says that quartz is found
near glaciers in the Alps and that large
quartz crystals were fashioned into spheres
to cool the hands. Nicolas Steno's study
paves the way for modern crystallography.
Charles Sawyer invents the commercial
quartz crystal manufacturing process.
It initiated that the transition from
mined and cut quartz are for electrical
appliances to manufactured quartz.
Varieties Of Quartz
Quartz is the common crustal
mineral which is puzzled with different
names. The important distinguish character
of quartz is that macro-crystalline and
the microcrystalline or cryptocrystalline
variety. The general term used for cryptocrystalline
quartz is Chalcedony. The varieties may
be translucent or opaque, but transparent
varieties tend to be macro-crystalline.
Variety of names arose from the color
of the mineral. For the macro-crystalline
variety, color is the primary identifier
and for cryptocrystalline minerals, color
is the secondary identifier. All varieties
of quartz are not the natural occurring.
Prasiolite and majority of the quartz
are produced by heat treatment and some
quartz like citrine occurs naturally.
It is formed in hydrothermal veins and
pegmatites. The hydrothermal veins bear
precious metals such as gold or silver
and form the quartz ores required in mining.
The Erosion of pegmatites may expose extensive
crystals known as cathedrals. It constitutes
of granite, sandstone, limestone, and
many other igneous, sedimentary, and metamorphic