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Item # DOLQ02133463
Stunning Pink
Rhombohedral Dolomite
and Pineapple Quartz
Crystals from Brazil

Item # CDOL02139993
Old Stock Dogtooth Calcite
on Dolomite from Black
Rock, Arkansas

Old stock Dogtooth Calcite
and Dolomite on matrix from
Black Rock, Lawrence
County, Arkansas. This
wonderful XL and
exceptionally rare specimen
comes with historical label
from the old "Mineral
Museum" in Follansbee, West
Virginia that was operated by
the respected rockhound Jim
Smedley who made his
collections during the 1950's
into the early 1960's. Jim
wrote some excellent articles
in the Rocks and Minerals
magazine during those years
detailing his family cross
country and foreign country
rock collecting trips filling the
trunk of his old Studebaker
with as many specimens as
the car would allow. We were
lucky enough to obtain some
specimens from the old
"Mineral Museum" collection
and are keeping most of them
for our personal collection but
we feel it is only fair to share
some of these treasures with
our loyal customers as well!

This piece weighs 60.2 oz
or 3.7lbs (1709g)
and measures
7.6 x 4.1 x 3.4 inches
(19.5 x 10.4 x 8.6cm)
Dolomite is both a mineral and a rock. The mineral is a pure form sedimentary rock-forming mineral that can be
found all over the world and is quite common in sedimentary rock formations. The rocks formed are a sedimentary
carbonate structure composed mostly of Dolomite but also with impurities such as Calcite, Quartz, and Feldspar.
The rock form is also called Dolomite, named for the French mineralogist, Deodat de Dolomieu who discovered
Dolomite in 1791.

Dolomite has been responsible for a large scale debate on a topic referred to as the "Dolomite Problem". The
problem?....Dolomite has been found all over the world in sedimentary dolomite beds that were formed in ancient
rock structures. Dolomite does not form on the earth's surface anywhere in modern times. How can a rock so
abundant no longer form? The answer is not easy...geologists who see sandstones, shales and limestones formed
today almost before their eyes...but no Dolomite...believe that a process similar to metamorphism called dia-genesis
occurs when mineralogical changes occur after the initial deposit is formed. They think that the calcite, aragonite and
magnesium with a warm saline ground water may be the source of Dolomite formation.
For more information on Dolomite

An Interesting history and geology reference we found while researching Dolomite....There are dolomite
mountains in Italy...This information below courtesy of

"The Dolomites are a mountain range located in north-eastern Italy that is a part of the Southern Limestone Alps. The
name "Dolomites" is derived from the famous French mineralogist Déodat Gratet de Dolomieu who was the first to
describe the rock, dolomite, a type of carbonate rock which is responsible for the characteristic shapes and colour of
these mountains; previously they were called the "pale mountains," and it was only in the early 19th century that the
name was Gallicized" (changed to Dolomites).

"During the First World War, the line between the Italian and Austro-Hungarian forces ran through the Dolomites.
There are now open-air war museums at Cinque Torri (Five Towers) and Mount Lagazuoi. Many people visit the
Dolomites to climb the vie ferrate, protected paths created during the First World War. A number of long distance
footpaths run across the Dolomites, which are called "alte vie" (i.e., high paths). Such long trails, which are numbered
from 1 to 8, require at least a week to be walked through and are served by numerous "Rifugi" (huts). The first and,
perhaps, most renowned is the Alta Via 1."
Pink Rhombohedral