MINERAL OF THE MONTH
December 2008: Picture Jasper
Jasper is a form of microcrystaline quartz. Its name comes from the Greek word, iaspis, which means “Spotted Stone.” Jasper comes in many colors and patterns, but is most often red, brown, or green. Jasper is what I refer to as a “First Cousin” to agate. Both semiprecious stones are microcrystaline quartz. The difference between them is the size and shape of the quartz microcrystals. Those in jasper are small, round grains of quartz crystal, which pack together tightly like bee-bees in a jar. Thus, jasper is usually opaque. Agate, on the other hand, has slightly larger fibrous quartz crystals, which results in it being translucent in most cases.
Many jaspers are actually metamorphic rocks. In cases like Picture Jasper, the colorful patterns result from other minerals that are present in the specimen. Picture Jasper primarily comes from Idaho and Oregon. It formed when mud rich with quartz oozed and dripped into pockets of gas formed by molten lava. The heat from the exposure turned the mud solid almost instantly. Therefore, Picture Jasper is actually petrified or silicified mud. Because of its interesting patterns, it has been used as a psychological tool: the researcher will ask a client who is "looking for an answer" to gaze into the stone and describe all the symbols he sees. The researcher then works with the client to form the symbols into some sort of answer. Picture jasper is said to help with the re-evaluation of life's issues. It is also believed to facilitate development and continuance of business pursuits and activities. It can also be used in meditation to encourage balance, as well as to help you to improve your self confidence and courage.
Mineral of the Month Archives
May 2007: Rainbow Fluorite
June 2007: Lake Superior Michipicoten Agate
July 2007: Labadorite
August 2007: Rain Flower Agate
Fall 2007: Malachite
December 2007: Nepheline Syenite
January 2008: Native Copper
February 2008: Amazonite
March 2008: Lake Superior Agate
April 2008: Shadow Agate
May 2008: Apohpylite
June 2008: Ocean Jasper
Summer 2008: Marra Mamba Tiger's Eye
September 2008: Mohawkite
October 2008: Mexican opal
November 2008: Prehnite
December 2008: Picture Jasper
January 2009: Sea Shell Jasper
February 2009: Polychrome Jasper
March 2009: Selenite Desert Rose
Spring 2009: Coyamito Agate
July 2009: Obsidian Needles
August 2009: Goethite
September 2009: Banded Iron Formation
Fall 2009: Fairburn Agate
March 2010: Fossilized Dinosaur Bone
April/May: 2010 Kentucky Agate
June 2010: Nantan Meteorite
July 2010: Mookaite Jasper
Aug/Sept 2010: Polyhedroid Agate
Fall 2010: Ammonite Fossil
September 2011: Petoskey Stones
Spring 2011: Petrfied Wood
Winter 2011: Argentina Condor Agate
January 2012: Mary Ellen Jasper
March 2012: Mexican Crazy Lace Agate
June 2012: Moqui Marbles
September 2012: Chlorastrolite Greenstone
March 2013: Jacobsville Sandstone
August 2013: Unakite
November 2013: Skip-an-Atom Agate
April 2014: Tiger's Eye
September 2014: Black Corundum
February 2015: Condor Agate
June 2015: Petoskey Stone
November 2015: Slag
June 2016: Lake Superior Copper Replacement Agates
March 2017: Chert
July 2017: Kona Dolomite
December 2017: Septarian Nodule
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Gitche Gumee Museum.
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Grand Marais, Michigan 49839