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

Conklin Limestone Company quarry (Falls Village Quarry), Falls Village, Canaan, Litchfield Co., Connecticut, USA

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84): 41° 59' 20'' North , 73° 21' 16'' West
Latitude & Longitude (decimal): 41.98889,-73.35444
GeoHash:G#: dr7yfgbgj
Locality type:Quarry
Köppen climate type:Dfb : Warm-summer humid continental climate


Marble quarry situated in the Cambrian Stockbridge Marble. Located on Sand Road north of Falls Village in the town of Canaan. It was opened by Charles Conklin in 1938 and is still owned and operated by the third generation, Jesse and George Conklin (in the same family that owns the Conklin Quarry in Rhode Island). Produces aggregate and marble building stone.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


11 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Calcite
Formula: CaCO3
Colour: white to pale grey
Fluorescence: lavender
Description: Primary component of the Stockbridge Marble, so mostly as anhedral grains. Rare vein filling by coarse-grained, cleavable masses.
Reference: Harold Moritz collection
Chalcopyrite
Formula: CuFeS2
Habit: anhedral grains
Colour: iridescent
Reference: Harold Moritz collection
'Chlorite Group'
Habit: subhedral grains
Colour: dark green
Reference: Harold Moritz collection
Diopside
Formula: CaMgSi2O6
Habit: subhedral flattened elongated prisms (pseudomorphed by tremolite)
Colour: yellowish-white
Fluorescence: blue-white
Description: Pseudomorphs of tremolite after diopside can reach 10 cm, usually partly etched out and having a yellowish to chalky appearance with basal parting preserved.
Reference: Harold Moritz collection
Dolomite
Formula: CaMg(CO3)2
Habit: curved rhombohedra
Colour: white to pale gray
Description: A principle component of certain layers in the Stockbridge Marble, so mostly anhedral grains. Rare drusy crystals lining fracures.
Reference: Harold Moritz collection
Goethite
Formula: α-Fe3+O(OH)
Habit: botryoidal
Colour: dark brown with iridescence
Description: Lining fractures in a loose, rusty, calcareous schist boulder with selenite.
Reference: Harold Moritz collection
Gypsum
Formula: CaSO4 · 2H2O
Habit: flat prisms
Colour: colorless
Description: Micro crystals and coatings filling thin fractures in a loose, rusty, calcareous schist boulder.
Reference: Harold Moritz collection
Gypsum var: Selenite
Formula: CaSO4 · 2H2O
Habit: flat prisms
Colour: colorless
Description: Micro crystals and coatings filling thin fractures in a loose, rusty, calcareous schist boulder.
Reference: Harold Moritz collection
'Limestone'
Reference: U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Marialite
Formula: Na4Al3Si9O24Cl
Habit: subhedral elongated prisms, square cross-section
Colour: gray to dark gray
Fluorescence: pale yellow
Description: Crystals to 15m or so, translucent, but look like mechanical pencil lead lying in fine-grained, gray dolomite-phlogopite-tremolite-sulfide rock. Crystals mostly first order prisms with square cross-sections modified by minor second order prisms. Poorly terminated.
Reference: Harold Moritz collection
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Habit: anhedral grains
Colour: light brown
Fluorescence: yellow
Reference: Harold Moritz collection
Pyrite
Formula: FeS2
Habit: anhedral grains
Colour: brassy
Reference: Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70 (6): 398.
Quartz
Formula: SiO2
Habit: massive, rare quartzoids to short prismatic
Colour: clear colorless to smoky
Description: Dark smoky massive pods and stringers common, rare drusy crystals lining fractures.
Reference: Harold Moritz collection
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Habit: euhedral to subhedral blades, brittle fibers
Colour: white, pale gray, pale green
Fluorescence: blue-white
Description: Occurs in many ways - as individual scattered euhedral crystals, as parallel or radiating aggregates, which can grade into fibrous crystals, and as etched pseudomorphs after diopside. Crystals can reach 5 cm and aggregates can be a couple of dm.
Reference: Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70 (6): 397.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Chalcopyrite'2.CB.10aCuFeS2
'Pyrite'2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Goethite'4.00.α-Fe3+O(OH)
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
'Dolomite'5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Gypsum'7.CD.40CaSO4 · 2H2O
var: Selenite7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
'Diopside'9.DA.15CaMgSi2O6
'Marialite'9.FB.15Na4Al3Si9O24Cl
'Phlogopite'9.EC.20KMg3(AlSi3O10)(OH)2
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Limestone'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with other Be/Al/Si frameworks
Marialite76.3.1.1Na4Al3Si9O24Cl
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
Gypsum
var: Selenite
-CaSO4 · 2H2O
'Limestone'-

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H GypsumCaSO4 · 2H2O
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Gypsum (var: Selenite)CaSO4 · 2H2O
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
CCarbon
C CalciteCaCO3
C DolomiteCaMg(CO3)2
OOxygen
O CalciteCaCO3
O DiopsideCaMgSi2O6
O DolomiteCaMg(CO3)2
O Goethiteα-Fe3+O(OH)
O GypsumCaSO4 · 2H2O
O MarialiteNa4Al3Si9O24Cl
O PhlogopiteKMg3(AlSi3O10)(OH)2
O QuartzSiO2
O Gypsum (var: Selenite)CaSO4 · 2H2O
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
NaSodium
Na MarialiteNa4Al3Si9O24Cl
MgMagnesium
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al MarialiteNa4Al3Si9O24Cl
Al PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Si DiopsideCaMgSi2O6
Si MarialiteNa4Al3Si9O24Cl
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si QuartzSiO2
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
SSulfur
S ChalcopyriteCuFeS2
S GypsumCaSO4 · 2H2O
S PyriteFeS2
S Gypsum (var: Selenite)CaSO4 · 2H2O
ClChlorine
Cl MarialiteNa4Al3Si9O24Cl
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca GypsumCaSO4 · 2H2O
Ca Gypsum (var: Selenite)CaSO4 · 2H2O
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
FeIron
Fe ChalcopyriteCuFeS2
Fe Goethiteα-Fe3+O(OH)
Fe PyriteFeS2
CuCopper
Cu ChalcopyriteCuFeS2

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Ordovician - Neoproterozoic
443.8 - 1000 Ma



ID: 3190671
Precambrian-Phanerozoic sedimentary rocks

Age: Neoproterozoic to Ordovician (443.8 - 1000 Ma)

Lithology: Mudstone-carbonate-sandstone-conglomerate

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Early Cambrian
511 - 541 Ma



ID: 2790571
Unit a [of Stockbridge Marble]

Age: Cambrian (511 - 541 Ma)

Stratigraphic Name: Stockbridge Marble

Description: White to pale-gray, massive, smooth-weathering dolomite marble.

Comments: Part of Western Uplands; Proto-North American (Continental) Terrane - Carbonate Shelf Secondary unit description from USGS Geologic Names lexicon (ref. CT017): Revised as Stockbridge Formation, a heterogeneous rock group that may be mapped as seven lithostratigraphic units A through G (ascending). Highest bed as mapped by Dale (1923) is interbedded with overlying schist and is reassigned to Walloomsac Formation. Units A, B, and C are mostly dolostone and include important beds of arkose and phyllite. Units D and F are heterogeneous rocks consisting of silty limestone, dolostone, calcite marble, phyllite, and calcareous sandstone. Sandstone shows cross-stratification that allows determination of the top of bedding. Units E and G are massive, white to gray calcite marble that include interbedded pale, massive, fine-grained dolostone. Because of this heterogeneity, the name is revised to Stockbridge Formation. Excellent exposures may be seen at Vossburg Hill and on hillside south of South Egremont village in Egremont quad, MA and NY. Yields no fossils but overlies Cheshire Quartzite of Early Cambrian age and underlies Middle Ordovician Walloomsac Formation; therefore, the Stockbridge spans the age between Early Cambrian and Early or Middle Ordovician.

Lithology: Major:{marble}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Weber, Marcelle H. and Earle C. Sullivan. (1995): Connecticut Mineral Locality Index. Rocks & Minerals (Connecticut Issue): 70 (6): 398.
Anonymous. (2012): "2012 USGS Aggregates Industry Atlas" in Aggregates Manager: 17(6): 72, 129.


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: January 25, 2020 07:50:32 Page generated: August 17, 2018 15:44:48
Go to top of page