Listing description
Moss agate (also called mocha stone) is
a semi-precious gemstone formed
from silicon dioxide. It is a form of chalcedony which
includes minerals of a
green colour embedded in the stone, forming filaments and other patterns
suggestive of moss.[1] The field
is a clear or milky-white quartz, and the
included minerals are mainly oxides of manganese or iron. It is not a true form of agate, as it lacks agate's defining feature of
concentric banding. Moss agate is of the white variety with green inclusions
that resemble moss. It occurs in many locations. The colors are formed due to
trace amounts of metal present as an impurity, such as chrome or iron. The
metals can make different colors depending on their valence (oxidation state).
Detailed description
Despite its name, moss agate does not contain organic matter and is usually
formed from weathered volcanic rocks.
Montana moss agate is found in the alluvial gravels
of the Yellowstone River and
its tributaries between Sidney and Billings, Montana. It was originally
formed in the Yellowstone National
Park area of Wyoming as a result of volcanic
activity. In Montana moss agate the red color is the result of iron oxide and
the black color is the result of manganese oxide.
Price
$249475.6/kg or $113398/ib
For more information:
mobile: +2348039721941
contact person: emeaba uche
e-mail: emeabau@yahoo.com
website: www.franchiseminerals.com
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