Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Canton Lead Mines (Cherry Brook lead mine; Dyer Farm zinc mine), Rattlesnake Mountain, Canton, Hartford Co., Connecticut, USAi
Regional Level Types
Canton Lead Mines (Cherry Brook lead mine; Dyer Farm zinc mine)Group of Mines
Rattlesnake MountainMountain
Canton- not defined -
Hartford Co.County
ConnecticutState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Latitude & Longitude (WGS84):
41° 50' 9'' North , 72° 54' 47'' West
Latitude & Longitude (decimal):
Locality type:
Group of Mines
Nearest Settlements:
PlacePopulationDistance
Canton Valley1,580 (2017)1.8km
Collinsville3,746 (2017)2.6km
West Simsbury2,447 (2017)6.1km
Weatogue2,776 (2017)7.1km
New Hartford Center1,385 (2017)7.1km


Very little has been written about this old locality, most references give only the briefest mention. A 1910 postcard shows what was called the zinc mine on the Dyer Farm, Collinsville, Conn. The 1869 map of Canton shows a house owned by "D. Dyer" on the road close to the mine location. The Town of Canton web site (see link below) gives a brief history of the Dyer house and property at 1 Dyer Cemetery Road, near the same spot, that had "...a farm of six hundred acres. Over the years it had a sawmill; “silver mine” that produced small quantities of zinc, lead, copper and beryl..." Given the size of the farm and the proximity of the house with the mine, the mine in the postcard must be the Canton lead mine.

Shepard (1837) presaged, or perhaps inspired, the mining of lead here with this short sentence:

Rolled masses [boulders] of quartz including galena have been found in Canton near Collinsville...indicating the existence of veins of such ores in these regions.


A hydrothermal fault vein deposit, probably related to Mesozoic rifting as large-scale faults associated with the Hartford and Cherry Brook rift basins are close by. Minor amounts of galena, sphalerite, and lead secondary minerals occur here. But the locality is most famous for its amethyst, which occurs lining cavities in breccia and varies from larger lavender, mottled and translucent crystals to smaller, clearer, deeply colored druses. Colorless and milky quartz also occurs. Any beryl found must be related to a pegmatite in the host rock that the mine intersected.

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Commodity List

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


Mineral List


7 valid minerals.

Detailed Mineral List:

Cerussite
Formula: PbCO3
Colour: pale gray to pale yellow-orange
Fluorescence: orange-yellow
Description: small, irregular, resinous crystals on quartz
Reference: Ronald Januzzi collection
Chalcopyrite
Formula: CuFeS2
Habit: anhedral
Colour: brassy yellow
Description: tiny grains in massive quartz with other sulfides
Reference: Marcelle Weber collection
Galena
Formula: PbS
Habit: cubic
Colour: steel-gray
Description: typically cubes and masses frozen in quartz
Reference: Rocks & Minerals (1995) 70:396-409; Hiller (1971)
Pyromorphite
Formula: Pb5(PO4)3Cl
Habit: acicular hexagonal
Colour: green
Description: "scanty green coatings of tiny hexagonal crystals" Schooner (1961)
Reference: Rocks & Minerals (1995) 70:396-409; Schooner (1961)
Quartz
Formula: SiO2
Habit: stubby parallel crystals or individual elongated prisms
Colour: colorless to milky white to lightly smoky
Description: banded columnar masses lining pockets in breccia grade into amethyst, individual elongated crystals up to 17 cm
Reference: Schooner (1961) Mineralogy of Connecticut
Quartz var:
Formula: SiO2
Habit: stubby parallel prisms lining pockets
Colour: lavender, purple
Description: Cavities in breccia are lined with parallel crystals of ordinary quartz or amethyst. Much cutting quality amethyst has been obtained there. Some is distinctly zoned. Larger crystals are typically paler colored, translucent, typically have mottled appearance. Smaller crystals typically clearer and deeply colored.
Reference: Kenneth Holt specimen (locality info corrected courtesy of John Betts); Mineralogical Record (1990) 21:203-213; Rocks & Minerals (1995) 70:396-409
Quartz var:
Formula: SiO2
Reference: John Burnham
Quartz var:
Formula: SiO2
Reference: John Burnham
Sphalerite
Formula: ZnS
Habit: massive
Colour: black, brown, yellow
Reference: Schooner (1961) Mineralogy of Connecticut
Wulfenite
Formula: Pb(MoO4)
Habit: tabular
Colour: orange
Description: "Tiny orange crystals are occasionally observed on quartz crystals and metallic ores...usually associated with pyromorphite" Schooner (1961)
Reference: Rocks & Minerals (1995) 70:396-409; Schooner (1961)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Milky Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Cerussite5.AB.15PbCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Wulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
Pyromorphite8.BN.05Pb5(PO4)3Cl

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Cerussite14.1.3.4PbCO3
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Pyromorphite41.8.4.1Pb5(PO4)3Cl
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Wulfenite48.1.3.1Pb(MoO4)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
var: Amethyst-SiO2
var: Milky Quartz-SiO2
var: Smoky Quartz-SiO2

List of minerals for each chemical element

CCarbon
C CerussitePbCO3
OOxygen
O Quartz (var: Amethyst)SiO2
O PyromorphitePb5(PO4)3Cl
O WulfenitePb(MoO4)
O CerussitePbCO3
O QuartzSiO2
O Quartz (var: Smoky Quartz)SiO2
O Quartz (var: Milky Quartz)SiO2
SiSilicon
Si Quartz (var: Amethyst)SiO2
Si QuartzSiO2
Si Quartz (var: Smoky Quartz)SiO2
Si Quartz (var: Milky Quartz)SiO2
PPhosphorus
P PyromorphitePb5(PO4)3Cl
SSulfur
S GalenaPbS
S SphaleriteZnS
S ChalcopyriteCuFeS2
ClChlorine
Cl PyromorphitePb5(PO4)3Cl
FeIron
Fe ChalcopyriteCuFeS2
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
MoMolybdenum
Mo WulfenitePb(MoO4)
PbLead
Pb GalenaPbS
Pb PyromorphitePb5(PO4)3Cl
Pb WulfenitePb(MoO4)
Pb CerussitePbCO3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Shepard, Charles Upham. (1837), Report on the Geological Survey of Connecticut.
Schairer, John F. (1931), Minerals of Connecticut. State Geological and Natural History Survey of Connecticut Bulletin 51.
Schooner, Richard. (1961), The Mineralogy of Connecticut. Fluorescent House, Branford, Connecticut.
Hiller, John, Jr. (1971), Connecticut Mines and Minerals. Privately published.
White, John, and Cook, Robert. (1990), Amethyst Occurrences of the Eastern United States. Mineralogical Record: 21(3): 203-213.
Weber, Marcelle H. and Earle C. Sullivan. (1995), Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70(6): 399.

External Links


Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: May 24, 2020 23:51:48 Page generated: April 16, 2020 06:39:13
Go to top of page