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A Shrine to Justice EarthCache

Hidden : 1/18/2016
Difficulty:
1 out of 5
Terrain:
1 out of 5

Size: Size:   other (other)

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Geocache Description:

The name of this cache is also the name of a historical marker located here in front of the Mariposa County Courthouse. Here, a major mining court case began that ended in the Supreme Court in Washington DC in 1857 which helped Congress sign the first federal mining act of 1866. The marker was made from a solid piece of Mariposite, a rock named after this town. So what is Mariposite and why is is named for this town?

Mariposite is a chromium rich mineral, which gives off a shiny green color. Because it was first discovered near Mariposa, it's only appropriate if it was called Mariposite. One of the characteristics of this mineral is that it's full of large micas, another mineral commonly found in granite and quartz. Micas are made of silica atoms that absorb all observable light, hence why they look dark and black. So how does Mariposite form?

Usually, Mariposite forms in large veins of quartz and dolomite. Quartz is made up of mostly silicon molecules (SiO2) and dolomite is made up of a mixture of calcium (Ca), magnesium (Mg), and oxygen (O) atoms. Overtime, the quartz and dolomite rich vein is heated and melts. When it cools, Mariposite is formed.

Works Cited

http://www.minerals.net/mineral-variety/mineral/mariposite.aspx

https://en.wikipedia.org/wiki/Mariposite

http://www.johnbetts-fineminerals.com/jhbnyc/mineralmuseum/picshow.php?id=26021

http://4.bp.blogspot.com/-y_m4ywXIIpY/VQZlez5WTWI/AAAAAAAAbtI/KyLIeXm_CTM/s1600/P1250134%2BMariposite%2BMother%2BLode%2Boutcrop%2Bin%2BCoulterville.jpg

TO LOG A FIND ON THIS CACHE YOU MUST GIVE ME THE CORECT ANSWERS BEFORE YOU LOG A FIND. YOU CAN CONTACT ME THROUGH MY EMAIL OR THE GEOCACHING MESSAGE CENTER. ANY INCORRECT ANSWERS WILL RESULT IN A DELETED LOG

1. A Shrine to Justice - on the first line of your email.

2. Describe the texture AND color(s) of the Mariposite at this location.

3. Describe the erosion processes here AND how they are effecting the Mariposite.

4. Describe two geologic similarities and differences of the polished surface verses the unpolished surface.

5. How large (or small) are the micas inside this Mariposite AND how abundant are they?

Additional Hints (No hints available.)