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Chlorastrolite, also known as Isle Royale Greenstone, is a green or bluish green stone. [1] Chlorastrolite has finely radiating or stellate (for examples, see crystal habits) masses that have a "turtleback" pattern. The stellate masses tend to be chatoyant, meaning they have a varying luster. This chatoyancy can be subtranslucent to opaque.
In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...
The Lake Ellen Kimberlite is a poorly exposed volcanic breccia located about 10 miles (16 km) northeast of Crystal Falls in the Upper Peninsula of Michigan. The first publication in 1981 [ 1 ] describing the feature led to speculation that this or similar kimberlites in the area might have been the source of the diamonds discovered a century ...
Amazonite, also known as amazonstone, [4] is a green tectosilicate mineral, a variety of the potassium feldspar called microcline. [4] [5] [6] Its chemical formula is KAlSi 3 O 8, [1] [7] which is polymorphic to orthoclase.
Remains found near the Hoover Dam in 2009 were later identified as his. The identification, the sheriff's office said, also has brought Hietamaki’s loved ones some closure.
A survey of Lake Michigan located at least 40 large craters on the lakebed. ... or Yellowstone National Park or some exotic location to get these extreme ecosystems, but this is in our backyard in ...
Captain Aaron G. Peer was born in Dundas, Ontario, in 1812, and moved to Algonac, Michigan, in 1821. In 1833, Peer and his brother built a schooner and went in to the lake transport business, locating at the tip of Michigan's thumb. Peer also began a grindstone quarry at this site, and by 1850 was selling $3000 of grindstones a year.
Human remains have been found on the property of the husband of Dee Ann Warner, a Michigan woman who has been missing since 2021, ... a Michigan woman who has been missing since 2021, police said ...