Three sulfide occurrences near Third Mattagamon Lake. Locality A is near the falls of the East Branch of the Penobscot River, T7 R10 WELS. Locality B is along the stream outlet from Matthews Pond to Chandler Pond, T7 R10 WELS. Locality C is in an outcrop on the east side of a dirt road (known by several names, including Telos Road), extending from Chamberlain Lake to Ashland and 2 km south of Haymock Lake, T7 R11 WELS.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ ~~Marcasite~~

ⓘ Pyrite

ⓘ Siderite

2 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

ⓘ ~~Marcasite~~

Formula: FeS₂

Description: Unlikely. The mention of marcasite seems to have been made in deference to the rustiness of the outcrops and the presumption that a fast altering sulfide was exposed. No supporting data.

References:

Hall, Bradford A., 1966, Outline of the Geology and Mineralization of the South End of the Munsungen Anticlinorium, Piscataquis County, Maine, Contributions to the Geology of Maine, Bulletin 18, Department of Economic Development, Augusta, Maine, p. 5-9.

ⓘ Pyrite

Formula: FeS₂

References:

ⓘ Siderite

Formula: FeCO₃

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Marcasite ?	2.EB.10a	FeS₂
Group 5 - Nitrates and Carbonates
ⓘ	Siderite	5.AB.05	FeCO₃

List of minerals for each chemical element

C	Carbon
C	ⓘ Siderite	FeCO₃
O	Oxygen
O	ⓘ Siderite	FeCO₃
S	Sulfur
S	ⓘ Marcasite	FeS₂
S	ⓘ Pyrite	FeS₂
Fe	Iron
Fe	ⓘ Marcasite	FeS₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Siderite	FeCO₃

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Ganderia DomainDomain
GranderiaPassive Margin
Quebec basinBasin

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References

Hall, Bradford A., 1966, Outline of the Geology and Mineralization of the South End of the Munsungen Anticlinorium, Piscataquis County, Maine, Contributions to the Geology of Maine, Bulletin 18, Department of Economic Development, Augusta, Maine, p. 5-9.

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