Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc
-
Upload
star-environmental -
Category
Education
-
view
1.128 -
download
1
Transcript of Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc
![Page 1: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/1.jpg)
Field Trip to North American Emerald Mine, Hiddenite, NCApril 9, 2008
Donald R. Privett, Ph.D.,
Professional Geologist
South Carolina and North Carolina
![Page 2: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/2.jpg)
Introduction A G.S.A. field trip lead by Ed Speer I was one of 19 attendees Breakfast and talk by Ed Speer Off to the mine.
![Page 3: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/3.jpg)
Purpose to examine a newly discovered pocket (opening in the host rock) for crystalline minerals maybe an emerald.
![Page 4: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/4.jpg)
General View
![Page 5: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/5.jpg)
The mainstay operation is a crushed stone quarry. Host rock is folded felsic and mafic gneiss, emeralds are in the dark or mafic rock.
![Page 6: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/6.jpg)
Washing blasted wall face.
![Page 7: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/7.jpg)
A blasted rock face is washed in search of pockets, our group looking at the only pocket found along 200 feet of rock face.
![Page 8: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/8.jpg)
The druse lined with crystalline quartz, calcite and siderite (iron carbonate).
![Page 9: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/9.jpg)
Quartz crystals removed from cavity
![Page 10: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/10.jpg)
Smoky quartz crystals.
![Page 11: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/11.jpg)
Side of exposed pocket. Shiny plates are muscovite mica crystals.
![Page 12: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/12.jpg)
Close-up of druse (pocket opening).
![Page 13: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/13.jpg)
Owner plans to break open the druse.
![Page 14: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/14.jpg)
Percussion hammer used futher open pocket.
![Page 15: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/15.jpg)
Still working - no emeralds today. Only one in 4 to 5
pockets contain any emeralds.
![Page 16: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/16.jpg)
Cut emerald from this mine.
![Page 17: Field trip Hiddinite,NC Emerald Mine southeastern GSA Charlotte,nc](https://reader038.fdocuments.net/reader038/viewer/2022110121/558a29ead8b42a38028b4640/html5/thumbnails/17.jpg)
Another necklace and earrings.