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Quartz : SiO2, K Feldspar

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minID: 07R-YEQ

Quartz : SiO2, K Feldspar

This image has been released to the public domain and may be used freely.
Dimensions: 2.5 inches x 2.5 inches x 2 inches

Dimensions: 2.5"x2.5"x2"

Very unusual spotted pattern in this cut and polished block of North Carolina leopardite. It is actually a quartz porphyry.

Kenny Gay, of the North Carolina Geological Survey provided me with this information:

"Lepoardite is actually a metavolcanic rock. It occurred in a thin dike years ago. It is described as a quartz porphyry.
The white "matrix" is composed of plagioclase, K feldspar, and quartz. The "spots" are manganese and iron oxide minerals. It occurred at the corner of Belmont and Sigel Avenues in Charlotte on the property of the Salvation Youth Center (long gone). Also at Belmont Springs also in Mecklenburg County. It is very rare now and collectors of NC minerals hold on to it tightly."

Purchased on eBay: "I am working on selling my grandfather's mineral collection. It was collected between 1940 and 1970 from all over the world. Some specimens he personally mined or collected on digs and some were purchased from dealers all around the world. Many were purchased from David Jenson, a close friend and former vice president of Ward's Natural Science Establishment. This auction will include any and all labels that are with the specimen and any history I can find. Many people have asked if it was alright to use my grandfather’s name with these specimens to keep the history trail more exact. Please do, he would be very happy knowing these specimens are being enjoyed and taken care of. This type of collection is a passion that has been kept alive by folks like all of you. His name was Clifford J. Awald, Buffalo New York. He was very involved with the Buffalo Museum of Science."

This photo has been shown 1598 times
Photo added:19th Aug 2009
Dimensions:380x400px (0.15 megapixels)
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