A Cu-Zn-Fe occurrence/mine located on the southeast flank of Croydon Mountain (a summit), on private land. The USGS MRDS database stated accuracy for this locality is 500 meters.

Local rocks include granite, granodiorite, and trondhjemite.

Workings include unspecified underground openings.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Copper

ⓘ Sulfur

ⓘ Zinc

Mineral List

5 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Granite

ⓘ Granodiorite

ⓘ 'Trondhjemite'

Detailed Mineral List:

Formula: CuFeS₂

Formula: FeS₂

Formula: Fe_1-xS

Formula: SiO₂

Formula: ZnS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂

List of minerals for each chemical element

O	Oxygen
O	ⓘ Quartz	SiO₂
Si	Silicon
Si	ⓘ Quartz	SiO₂
S	Sulfur
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Pyrite	FeS₂
S	ⓘ Pyrrhotite	Fe_1-xS
S	ⓘ Sphalerite	ZnS
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Pyrrhotite	Fe_1-xS
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS

Other Databases

Link to USGS MRDS:	10100547

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Ganderia DomainDomain
GranderiaPassive Margin

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

USGS MRDS ID #W102190.

Hitchcock, Charles (1869). First Annual Report upon the Geology and Mineralogy of the State of New Hampshire: 28.

Streckeisen, A. (1980) Classification and nomenclature of volcanic rocks, lamprophyres, carbonatites and melilitic rocks IUGS Subcommission on the Systematics of Igneous Rocks. Geologische Rundschau, 69 (1) 194-207 doi:10.1007/bf01869032

U.S. Bureau of Mines (1995), Minerals Availability System/Mineral Industry Location System (MAS/MILS), U.S. Bureau of Mines, file ID #0330190005.

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

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