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Showing posts with label Vermont. Show all posts
Showing posts with label Vermont. Show all posts

Friday, January 14, 2011

Gold Occurrences in Vermont

Did you ever know that Calvin Coolidge the 30th president of the United States as a young man was a gold miner in Plymouth, Vermont where he was born. Virtually all the rivers and streams on the east flank of the Green Mountains are gold bearing. This gold belt crosses the Connecticut River as part of the Ammonoosuc gold belt of New Hampshire and extends northwards into Québec. This is part of a larger gold belt found in the northern Appalachians that extends all the way from Staten Island, New York to Baie Verte on the north coast of Newfoundland. On the landward side there is a continuous thrust fault that goes by many names but is continuous from one end to the other.

In this case however we are only considering the gold bearing areas in the state of Vermont. These are found in the eastern flank of the Green Mountains in the so-called Iapetus Suture Zone an area that is bounded on its west side by large intrusions granite. On its Eastside it is bounded by the Connecticut River. Virtually anywhere in this zone It is possible to find both lode and the placer gold.

The Waits River one of the many goldbearing streams of Vermont.

Even though the idea of finding gold causes us to have dreams of fabulous wealth in Vermont although there is gold there is not enough that has been discovered so far to make anyone wealthy. Several years ago there were unproven rumors about someone finding a gold pocket in the Williams River that produced over $2800 worth of gold in one afternoon.

Aside from gold there are also many occurrences of sulfide minerals in Vermont lying within the Connecticut Valley -- Gaspé Synclinorium and the Bronson Hill Anticlorium as well as the Appalachian province of Stratabound massive sulfide minerals. There are also isolated occurrences that are associated with the Green Mountain Anticlinorium Tectonic Province.

While a great many of the soleplate minerals have been discovered in Vermont that include lead, zinc, copper, molybdenum and arsenopyrite, copper was the only sulfide mineral that was mined on a large scale. Most of these sulfides contain gold as a byproduct.

At the present time, other than gold, no other metallic minerals are being mined in Vermont at the present time. The copper sulfide ore was originally discovered in Orange County as early as 1793, but it took another four years in the early 1830s before was finally mined. Until the discovery of copper on the Keweenah Peninsula of Michigan in 1846 Vermont was the largest producer of copper in the United States.

To this day the Orange County Mining District is a scar on the landscape. The site of the mine is at present listed on CERCLIS the EPA's database showing potential hazardous waste sites that will eventually be remediated under the Superfund program.

The first reports of gold in Vermont surfaced in 1845 when the State Geologist C.B. Adam's in his First Annual Report on the Geology of Vermont reported finding gold in the town of Somerset, Vermont.

It was four years later when the California gold rush caused many Vermonters to search for gold in California. By the mid-1850s many of these gold seekers had returned home. One of these 49ers by the name of Capt. Abial Slayton had struck it rich on his California gold claim. When he returned to Vermont in 1855 he went on to discover gold in what was then Hull's Brook that has since been renamed Gold Brook in Stowe. At the time of his discovery Slayton set up a sluicing operation that employed several people. Although this gold discovery never produced the amount of gold be found in California it did produce enough so that in 1887 the builders of the Mount Mansfield Electric Railroad drove the last spike that was coated with some of Slayton's gold.

An old fashioned gold pan used by the 49ers.
Photo by Nate Culi


In 1854, a mine containing gold, silver, lead and copper was opened in Bridgewater, Vermont. In this mine called was found as small irregular grains in quartz. It was noted in 1867 by Dr. C. T. Jackson that the so-called great Appalachian gold belt passed through both Plymouth and Bridgewater.

By the early 1900s even though gold was present in Vermont it was determined that it didn't occur in commercial quantities. There had been gold bearing rocks discovered in Plymouth and Bridgewater that were mined only it cost more to mind the metal than it was worth. By that time it was determined that it is useless to spend time and money trying to find a fortune in gold mining in Vermont.

It was the placer deposits that were found in the Plymouth area around 1855 that Calvin Coolidge later worked for gold when he was a young man. Even though there are plenty of indications that no one will get rich mining gold in Vermont, gold hunters are still out there looking for gold during the summer months when many people converge on the gold bearing streams in the state trying to recover “free gold” from stream gravels found in the beds of rivers and streams throughout the state.

Wednesday, January 12, 2011

The Ammonoosuc Gold Belt in New Hampshire:

The Ammonoosuc Gold Belt in New Hampshire is only a part of a much larger gold bearing district that extends out of southeastern Vermont and up the Connecticut River to New Hampshire and Québec even further north. In New Hampshire this belt contains the highest potential in the entire state where important discoveries of gold and other metals may be found.

This gold bearing district is closely associated with the Iapetus Suture Zone caused by the closing of the Iapetus Ocean hundreds of millions of years ago. This suture zone is traceable all away from Staten Island New York across the Atlantic Ocean to the mountains of northern Norway. Although this is one of the major suture zones on earth it has been little explored by miners.

Rocks found in this belt are metamorphic in origin for many of them were originally deposited as volcanics that could be endowed with gold. This zone is now the host of the most intense placer gold recovery in the state that in recent years has taken place in the sand and gravel deposits throughout the district.
The Ammonoosuc River at the Littleton Grist Mill during the Winter
Photo by Captain Tucker

The rocks found in the White Mountains and other genetically associated rocks to the South like those within the Patuckaway Mountains are also considered to be favorable for gold prospecting. Throughout the state the potential for gold being found along faults is high especially in those that have been acted upon by hydrothermal waters were quartz has been deposited in veins as so-called bull quartz. Bull quartz is a particular milky variety of crystalline quartz in veins that often has gold deposited on the interfaces of its crystals.

Gold has been found in many of the streams of northern and western New Hampshire included in this partial list:

Town Stream
Benton Tunnel Brook
Lincoln Notch Brook
Lisbon Salmon hole Brook
Wild Ammonoosuc River
Ammonoosuc River below the town of Bath

Northern Coos County

Indian Stream
Perry Stream
Dead Diamond River
Swift diamond River

Because of the potential damage that they can cause all gold panners should try to keep the disturbance of the stream beds of the low level of disturbance.

A great deal of information about gold found in New Hampshire is available from the geological survey of the state that is located in Concord. Another source of information is often to be found in old town histories.