Mount Tom Beryllium Prospect

Moodus, Connecticut

41.4939°N 72.4755°W

Mine Overview

The Mount Tom Beryllium Prospect is near Moodus, Connecticut. Historically the site has been part of the East Haddam Mining District. The ore mined is composed of plagioclase, quartz and beryl with waste material consisting primarily of garnet and tourmaline. The ore body extends 182 meters (600 feet) long and 150 meters (492 feet) wide. The mineralization at this location is from the Lopingian epoch 259.80 to 252.17 million years ago. The New England Upland Section of the Appalachian Highlands characterize the geomorphology of the surrounding area.

Site identification and general characteristics. Learn about USGS mines.

Beryllium Primary Commodity
Site Record Type^?
Occurrence Development Status^?
Pegmatite Dike Mine Type^?
Metallic Site Commodity Type^?

Mine Names

Name^? Status^?
Mount Tom Beryllium Prospect Current

Owner Name and Address

David Klar

Type: Owner

Mrs. Rosodowski

Type: Owner

Saul Klar

Type: Owner

Commodities

Additional textual information about a site or mine.

Commodity Type Importance
Beryllium Metallic Primary

Notes

PART OF DIKE OWNED BY MRS. ROSODOWSKI AND PART OWNED BY DAVID AND SAUL KLAR. PEGMATITE BODY BETWEEN 600 AND 1100 FEET LONG, 50 TO 150 FEET WIDE WITH SMALL PITS AS MUCH AS 6 FEET DEEP. TRENDS NORTH TO N. 10 DEG. WEST. OUTCROPS AS FLAT SHEET TO NORTHWEST; WEST CONTACT DIPS 3 DEG. TO 45 DEG. WEST; EAST CONTACT STRIKES N. 10 DEG. WEST, DIPS 18 DEG. WEST. SMALL BERYL CRYSTALS.

Deposit

INFORMATION SOURCE: 1 PUBLIC LITERATURE; 2 UNPUBLISHED REPORTS.

Location Info

Middlesex , Connecticut County / State

Continent Country State County
North America The United States Connecticut Middlesex

Mining Districts

Formal or informal mining district names.

District
East Haddam Mining District

Development

TOTAL$: US

Geology

NUMEROUS PEGMATITE DIKE SWARMS IN NORTH-SOUTH ZONE TO NORTHWEST OF AREA, MOST DIKES TREND NORTHWARD AND ARE IN THE MIDDLE ORDOVICIAN COLLINS HILL SCHIST FORMATION.

Materials

Minerals or other materials present in the mine.

Role^? Material^?
Gangue/Waste Garnet
Gangue/Waste Tourmaline
Ore Beryl
Ore Muscovite
Ore Plagioclase
Ore Quartz

Orebody

Characteristics of the ore body.

Length:
Width: 150.00 meters (492.13 feet)
Strike: n. 10 deg. west
Dip: west contact: 3 deg. to 45 deg. west

Length:
Dip: west contact: 3 deg. to 45 deg. west

Rocks

Geological materials at the site.

Class^? 1st Order Name^? 2nd Order Name^? 3rd Order Name^? 4th Order Name^? Most Specific Name^? Begin Time End Time Description^?
Associated Rock Metamorphic Rock Gneiss - - Gneiss Lopingian Lopingian -
Associated Rock Plutonic Rock Pegmatite - - Pegmatite - - -
Host Rock Metamorphic Rock Gneiss - - Gneiss - - -
Mineralization - - - - - Lopingian Lopingian -

Physiography

Physiographic area where the resource is found.

Division Province^? Section
Appalachian Highlands New England Province New England Upland Section

Model

Mineral deposit model of the site.

Name^? USGS Model Code^? BC Model Code^? Mark 3 model code^?
BERYLLIUM-LITHIUM PEGMATITES 13A - -

Reserve-resource

SMALL QUANTITIES OF BERYL AVAILABLE FROM SMALL, LOW GRADE DEPOSIT.

Nearby Deposits

Other deposits in the same region.

Nearby Places

Moodus (1.45 miles away)
Haddam (2.21 miles away)
East Haddam (2.91 miles away)
Higganum (4.22 miles away)
East Hampton (5.83 miles away)
Chester (6.40 miles away)
Deep River (7.76 miles away)
Colchester (9.32 miles away)
Marlborough (9.53 miles away)
Portland (10.13 miles away)
Middletown (10.21 miles away)
Salem (10.36 miles away)
Killingworth (10.43 miles away)
Essex (10.66 miles away)
Durham (10.67 miles away)
Cromwell (11.22 miles away)
Middlefield (12.34 miles away)
Hebron (12.66 miles away)
Old Lyme (14.45 miles away)
Westbrook (14.48 miles away)
Rocky Hill (14.52 miles away)
Old Saybrook (14.89 miles away)
Saybrook Manor (14.94 miles away)
Clinton (15.11 miles away)

Nearby Mining Districts

East Haddam Mining District (0 miles away)
East Hampton Mining District (3.07 miles away)
Middletown Mining District (4.14 miles away)

Footnotes

* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.

** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.

¹ World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.

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