Colorado Mineral Society Patch


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CMS Members Jeff Self and Donna Ware featured on Colorado Public Radio's “Colorado Matters”

CMS members Jeff Self and Donna Ware were featured in an interview on the “Colorado Matters” program on Colorado Public Radio. The recorded interview with Ryan Warner can be listened to online via the CPR website at the link below, along with a story and photos about them.

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Welcome to the Colorado Mineral Society

Celebrating our 83rd Year!
1936 - 2019

Friday, February 1st, 2019 - 7:30 pm
CMS General Membership Meeting
at St. Paul's Episcopal Church, Lakewood
Kids, guests and visitors are always welcome

Map to St. Paul's Church

 

February General Meeting Presentation:

Absolute Black

by Damon Hauschulz


Damon Hauschulz did a presentation at last October’s 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. February’s 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.

Wondering 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 banded.
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 distributer?)
:
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 areas.

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.

Bio:
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.



A Visitor’s Guide to
Colorado Gemstones
Article

On International Gem Society's
Website mentions the
Colorado Mineral Society


Click here to read

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