General Meeting Presentation:
Damon Hauschulz did a presentation
at last Octobers CMS general meeting about a biographical
story that traced the journey of a 9 ton gneiss boulder
(called Bob) found in Fairplay, CO from its birth in
an ancient volcano 1.8 billion years ago to unearthing
by a glacier 10-20 thousand years ago. Februarys
presentation is a story about another rock. The mystery
begins with a lead provided by the Natural Building
Stone Database. The journey goes halfway around the
planet and way back in time to lost continents.
about your kitchen counter top? What is it and where
did it come from? Is it really a granite? Check out
the web site at: www.natural-stone-database.com.
You can search by trade name, type, or color . The database
lists over 18,000 stone types from around the world.
As an example a search for Jurapana Columbo Gold (a
popular counter top rock) turned up this picture below
plus a short description:
A fine- to coarse-grained, yellow-brown gneiss, strong
Uses: Ornamental stone.
The database is by Abraxas, stone experts Gmbh. They
are located in Germany. The web site listed above is
free but is a stripped-down version of their more complete
version. Cost is 260 Euros for the complete version.
On the other hand, a direct search in Google for "Jurparan
Gold" gave many hits: One was from MISTONES (stone
Juparana Colombo Gold or Juparana Gold is an exotic
granite quarried in India. It's an extremely hard igneous
stone. It presents large gray veins over a yellowish
brown background with some rust. It can also have peachy
Formed of molten stone under the intense heat and pressure
of inner earth, the magma slowly cooled and crystallized,
forming granite. Juparana Gold granite is durable, weather
resistant and beautiful.
One of the hardest of stones, Juparana Gold granite
is excellent for stone cladding, curtain walls, water
features, counter tops, furniture, and elevator panels.
Juparana Colombo Gold is quarried in a bedrock quarry
formation near the town of Thagamalai in the state of
Tamil Nadu, India . The size and color of each block
is consistent between shipments. Upper layers of the
quarry produce this stone, Juparana Colombo Gold, whereas
the lower layers produce Juparana Colombo.
Now the trick is to sort out the incorrect information.
MISTONES calls the rock an "exotic granite",
but since the rock is banded it is probably a gneiss,
which is a metamorphic rock. On the other hand, MISTONES
does indicate that the rock is quarried in India, which
is very helpful if one wants to know more.
Damon Hauschulz is half engineer and half artist. He
works as a staff research electromechanical engineer
at the University of Colorado. Geology is an avocation
where he uses the science of geology to inform the direction
and composition of the art pieces. Two large rock panels
are on permanent display inside the University of Colorado
Earth Sciences Building.