Map of Coal Seam in Rhode Island!?

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Map of coal seam in Rhode Island!?

PostBy: lrc123 On: Tue Sep 23, 2014 10:36 pm

Hello! I am a self described 'armchair geologist', and northern new england transplant currently living in Providence.

I'm wondering if anyone has had any luck finding a map of coal seams in Rhode Island. I don't know what I would use them for? Maybe take a walk- try and walk the whole thing, or just go for a visit to take a look! I know they are not visible from above ground, but I have seen anecdotal evidence online that there are old piles of coal in places along the seam and outcroppings in some places... I just can't get anyone to tell me where they are!! :(

Thanks all!
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Re: Map of coal seam in Rhode Island!?

PostBy: LDPosse On: Tue Sep 23, 2014 10:51 pm

I don't really have anything to contribute here, but I've been looking around online for the same thing, and haven't come up with too much..... A few sporadic documents online without pictures or maps.
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Re: Map of coal seam in Rhode Island!?

PostBy: coalvet On: Tue Sep 23, 2014 11:25 pm

Try this!

pubs.usgs.gov/bul/0615/report.pdf
PLATE I. Sketch map of the Rhode Island coal field. ... at South mine of Portsmouth Coal Co., Portsmouth, R. I......... 13.
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Re: Map of coal seam in Rhode Island!?

PostBy: confedsailor On: Wed Sep 24, 2014 7:56 am

Ouch, that was fairly scathing. Somewhere between the assessments of high ash content, high incidence of clinkering, uncontrollably hot fires that damage stove tops and boilers, and low btu/lb not surprised they don't mine it anymore.
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Re: Map of coal seam in Rhode Island!?

PostBy: jpete On: Fri Sep 26, 2014 11:20 pm

http://www.providencejournal.com/breaki ... school.ece

Historic records show that the Valley Falls coal mine, also known as the Blackstone coal mine, was one of two coal mines that operated in Cumberland in the 19th century.

It had its origins around 1847 when a neighbor struck coal while digging either a well or a house cellar.

The mine had an entrance at the end of Lusitania Street and followed a vein downward at about 35 degrees to a depth of between 40 and 65 feet, with various shafts shooting off perpendicular to the main shaft.

The Valley Falls coal was especially hard and difficult to burn. Instead, it was ground into a fine powder and sold for use as foundry facing — a material used in casting iron that helps the casting slip out of its mold.


And I know a few years back, a hole opened up in the parking lot of Garden City plaza from a mine collapse so there is a vein in that neighborhood too.
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Re: Map of coal seam in Rhode Island!?

PostBy: jpete On: Fri Sep 26, 2014 11:22 pm

And slightly off topic, after rereading the article I posted, is the "Blackstone Valley" so named because of all the coal deposits? Possibly a translation from the Indian word?
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Re: Map of coal seam in Rhode Island!?

PostBy: fifthg On: Sat Sep 27, 2014 7:18 am

the USGS should have maps of the coal veins.Find which quadrangle(s) are involved, and you can even buy paper maps.The info is out there,you just need the patience to research the data.The painstaking survey work done then is amazing,and they're maps are stunningly accurate.I have seen maps where Rhode Island coal was classed as Meta-Anthracite,Which is the highest class of coal.I wondered why it wouldn't have been mined more extensively.Economics,probably,That is small seams,or difficult geology,but if it was Meta-Anthracite,it shouldn't have been due to poor quality.
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Re: Map of coal seam in Rhode Island!?

PostBy: confedsailor On: Sat Sep 27, 2014 7:40 am

In the report the seams were described as undulating, and squeezed. They mentioned its usefulness in applications where a high ash content was acceptable, specifically roasting ores. At the same time the coal had an excessive amount of moisture content which reduced its Btu/Lb to an average of 9000 with air dried coals coming in at 10500. The veins of graphite were considered exploitable for furnace linings, but the coal could not compare to Pa Anthracite.

Ouch, that was fairly scathing. Somewhere between the assessments of high ash content, high incidence of clinkering, uncontrollably hot fires that damage stove tops and boilers, and low btu/lb not surprised they don't mine it anymore.
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Re: Map of coal seam in Rhode Island!?

PostBy: fifthg On: Sat Sep 27, 2014 10:26 am

"Undulating and squeezed,"would be difficult geology,low BTU and high moisture rules the coal you mention out as Meta-Anthracite,
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Re: Map of coal seam in Rhode Island!?

PostBy: confedsailor On: Sat Sep 27, 2014 10:47 am

The report refered to it as a high-ash, high-moisture, Graphitic Anthracite of high specific gravity. I also found the section that said it was high in Chlorides. It would seem to be kind of a one-off coal.
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Re: Map of coal seam in Rhode Island!?

PostBy: Pacowy On: Sat Sep 27, 2014 2:12 pm

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Re: Map of coal seam in Rhode Island!?

PostBy: CapeCoaler On: Sun Sep 28, 2014 9:24 pm

There was also some mining done around Taunton as I recall...
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Re: Map of coal seam in Rhode Island!?

PostBy: plumber On: Thu Oct 02, 2014 10:45 am

jpete wrote:And slightly off topic, after rereading the article I posted, is the "Blackstone Valley" so named because of all the coal deposits? Possibly a translation from the Indian word?


William Blackstone
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Re: Map of coal seam in Rhode Island!?

PostBy: Vinmaker On: Fri Oct 03, 2014 7:47 am

I did not know we ever mined coal here in New England. Interesting.
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Re: Map of coal seam in Rhode Island!?

PostBy: jpete On: Sat Oct 04, 2014 7:24 pm

plumber wrote:
jpete wrote:And slightly off topic, after rereading the article I posted, is the "Blackstone Valley" so named because of all the coal deposits? Possibly a translation from the Indian word?


William Blackstone


Well that blows my theory out of the water. :D

Thanks.
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