SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
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

Dracut, Middlesex Co., Massachusetts, USAi
Regional Level Types
Dracut- not defined -
Middlesex Co.County
MassachusettsState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84):
42° 40' 13'' North , 71° 18' 9'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Dracut28,831 (2017)0.0km
Lowell110,699 (2017)4.2km
Pelham12,676 (2017)7.4km
Tewksbury29,326 (2017)8.7km
Chelmsford33,925 (2017)9.5km


Formerly a part of Chelmsford, Dracut was officially incorporated as a town in 1701.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

28 valid minerals.

Detailed Mineral List:

'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: P. Cristofono collection, 2013
Anatase
Formula: TiO2
Reference: Sam Pavadore collection
Calcite
Formula: CaCO3
'Chabazite'
Chalcopyrite
Formula: CuFeS2
Reference: Skehan, James. Roadside Geology of Massachusetts, 2001.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Fairbanks, Ernest E. (1923). Notes on Massachusetts Minerals (American Mineralogist 8:130)
Clinochlore var: Sheridanite
Formula: (Mg,Al,Fe)6(Si,Al)4O10(OH)8
Reference: Fairbanks, Ernest E. (1923). Notes on Massachusetts Minerals (American Mineralogist 8:130)
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: P. Cristofono collection, 2013
Diopside
Formula: CaMgSi2O6
Reference: P. Cristofono collection, 2013
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fluorapatite
Formula: Ca5(PO4)3F
Reference: P. Cristofono collection, 2013
Fluorite
Formula: CaF2
Reference: P. Cristofono collection, 2013
Grossular
Formula: Ca3Al2(SiO4)3
Reference: P. Cristofono collection, 2013
'Heulandite subgroup'
Ilmenite
Formula: Fe2+TiO3
Reference: Dennen, W. H. (1943). A nickel deposit near Dracut, Mass. (Economic Geology 38: 25-55.)
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Dennen, W. H. (1943). A nickel deposit near Dracut, Mass. (Economic Geology 38: 25-55.)
Marcasite
Formula: FeS2
Reference: Gleba, 1978. Massachusetts Mineral & Fossil Localities
Microcline
Formula: K(AlSi3O8)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: P. Cristofono collection, 2013
Opal
Formula: SiO2 · nH2O
Reference: P. Cristofono collection, 2013
Opal var: Opal-AN
Formula: SiO2 · nH2O
Reference: P. Cristofono collection, 2013
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: Skehan, James. Roadside Geology of Massachusetts, 2001.; American Mineralogist (1930) 15: 1-22
Polydymite
Formula: Ni2+Ni3+2S4
Reference: Fairbanks, Ernest E. (1923). Notes on Massachusetts Minerals (American Mineralogist 8:130)
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Pyrite
Formula: FeS2
Reference: P. Cristofono collection, 2013
Pyrrhotite
Formula: Fe7S8
Reference: Skehan, James. Roadside Geology of Massachusetts, 2001.; American Mineralogist (1930) 15: 1-22
Quartz
Formula: SiO2
Scheelite
Formula: Ca(WO4)
Fluorescence: bright blue-white (SW)
Reference: P. Cristofono collection, 2013
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
'Soapstone'
Reference: Jackson, 1844. Final Report on The Geology and Mineralogy of NH, p.169
'Stilbite subgroup'
Talc
Formula: Mg3Si4O10(OH)2
Reference: Jackson, 1844. Final Report on The Geology and Mineralogy of NH, p.169
Titanite
Formula: CaTi(SiO4)O
Reference: P. Cristofono collection, 2013
Violarite
Formula: Fe2+Ni3+2S4
Reference: Short, M. N. and Shannon, Earl V. (1930). Violarite and other rare nickel sulphides (American Mineralogist 15:1-22.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Marcasite2.EB.10aFeS2
Pentlandite2.BB.15(FexNiy)Σ9S8
Polydymite2.DA.05Ni2+Ni3+2S4
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Violarite2.DA.05Fe2+Ni3+2S4
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Anatase4.DD.05TiO2
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Opal4.DA.10SiO2 · nH2O
var: Opal-AN4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Scheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Almandine9.AD.25Fe2+3Al2(SiO4)3
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
var: Sheridanite9.EC.55(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Clinozoisite9.BG.05a{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Diopside9.DA.15CaMgSi2O6
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Grossular9.AD.25Ca3Al2(SiO4)3
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Talc9.EC.05Mg3Si4O10(OH)2
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Chabazite'-
'Heulandite subgroup'-
'Soapstone'-
'Stilbite subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 3:4
Polydymite2.10.1.7Ni2+Ni3+2S4
Violarite2.10.1.8Fe2+Ni3+2S4
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Anatase4.4.4.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine51.4.3a.2Fe2+3Al2(SiO4)3
Grossular51.4.3b.2Ca3Al2(SiO4)3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Clinozoisite58.2.1a.4{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Chabazite'-
Clinochlore
var: Sheridanite
-(Mg,Al,Fe)6(Si,Al)4O10(OH)8
'Heulandite subgroup'-
Opal
var: Opal-AN
-SiO2 · nH2O
'Soapstone'-
'Stilbite subgroup'-

List of minerals for each chemical element

HHydrogen
H Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
H PrehniteCa2Al2Si3O10(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
H TalcMg3Si4O10(OH)2
H Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Opal (var: Opal-AN)SiO2 · nH2O
H ClinochloreMg5Al(AlSi3O10)(OH)8
H OpalSiO2 · nH2O
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C CalciteCaCO3
OOxygen
O Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
O CalciteCaCO3
O QuartzSiO2
O PrehniteCa2Al2Si3O10(OH)2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O MicroclineK(AlSi3O8)
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
O TalcMg3Si4O10(OH)2
O MagnetiteFe2+Fe23+O4
O IlmeniteFe2+TiO3
O AnataseTiO2
O AlmandineFe32+Al2(SiO4)3
O Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O DiopsideCaMgSi2O6
O FluorapatiteCa5(PO4)3F
O GrossularCa3Al2(SiO4)3
O MuscoviteKAl2(AlSi3O10)(OH)2
O Opal (var: Opal-AN)SiO2 · nH2O
O ScheeliteCa(WO4)
O TitaniteCaTi(SiO4)O
O ClinochloreMg5Al(AlSi3O10)(OH)8
O OpalSiO2 · nH2O
FFluorine
F FluorapatiteCa5(PO4)3F
F FluoriteCaF2
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Mg TalcMg3Si4O10(OH)2
Mg DiopsideCaMgSi2O6
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
AlAluminium
Al Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Al PrehniteCa2Al2Si3O10(OH)2
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al MicroclineK(AlSi3O8)
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al AlmandineFe32+Al2(SiO4)3
Al Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Al GrossularCa3Al2(SiO4)3
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al ClinochloreMg5Al(AlSi3O10)(OH)8
SiSilicon
Si Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Si QuartzSiO2
Si PrehniteCa2Al2Si3O10(OH)2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si MicroclineK(AlSi3O8)
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
Si TalcMg3Si4O10(OH)2
Si AlmandineFe32+Al2(SiO4)3
Si Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si DiopsideCaMgSi2O6
Si GrossularCa3Al2(SiO4)3
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Opal (var: Opal-AN)SiO2 · nH2O
Si TitaniteCaTi(SiO4)O
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si OpalSiO2 · nH2O
PPhosphorus
P FluorapatiteCa5(PO4)3F
SSulfur
S PyrrhotiteFe7S8
S Pentlandite(FexNiy)Σ9S8
S ChalcopyriteCuFeS2
S MarcasiteFeS2
S ViolariteFe2+Ni23+S4
S PolydymiteNi2+Ni23+S4
S PyriteFeS2
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca PrehniteCa2Al2Si3O10(OH)2
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca DiopsideCaMgSi2O6
Ca FluorapatiteCa5(PO4)3F
Ca FluoriteCaF2
Ca GrossularCa3Al2(SiO4)3
Ca ScheeliteCa(WO4)
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti IlmeniteFe2+TiO3
Ti AnataseTiO2
Ti TitaniteCaTi(SiO4)O
FeIron
Fe PyrrhotiteFe7S8
Fe Pentlandite(FexNiy)Σ9S8
Fe ChalcopyriteCuFeS2
Fe MarcasiteFeS2
Fe ViolariteFe2+Ni23+S4
Fe Clinochlore (var: Sheridanite)(Mg,Al,Fe)6(Si,Al)4O10(OH)8
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe MagnetiteFe2+Fe23+O4
Fe IlmeniteFe2+TiO3
Fe AlmandineFe32+Al2(SiO4)3
Fe PyriteFeS2
NiNickel
Ni Pentlandite(FexNiy)Σ9S8
Ni ViolariteFe2+Ni23+S4
Ni PolydymiteNi2+Ni23+S4
CuCopper
Cu ChalcopyriteCuFeS2
WTungsten
W ScheeliteCa(WO4)

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

Silurian
419.2 - 443.8 Ma



ID: 2926626
Berwick Formation

Age: Silurian (419.2 - 443.8 Ma)

Stratigraphic Name: Berwick Formation

Description: Thin- to thick-bedded metamorphosed calcareous sandstone, siltstone, and minor muscovite schist. In New Hampshire: Used as Berwick Formation of Merrimack Group. Consists of purple biotite-feldspar granofels or schist. Contains interbeds of calcsilicate granofels and minor metapelites. Includes Gove Member, mapped separately. Stratigraphic sequence with respect to Eliot Formation is uncertain. Age of all formations in Merrimack Group changed to Ordovician(?) to Silurian(?) based on isotopic age determinations of approx 440 and 420 Ma from detrital zircons from Berwick by J.N. Aleinikoff (oral commun., 1994) (Lyons and others, 1997).

Comments: Part of Merrimack Belt (Silurian, Devonian and Pennsylvanian Rocks). Secondary unit description per MA010. Original map source: Unpublished Digital Geologic Map of Massachusetts received from Rudi Hon of Boston College in 1998; based on the 1983 USGS paper version (MA002).

Lithology: Major:{metaclastic}, Minor:{muscovite schist}

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]

Neoproterozoic
541 - 1000 Ma



ID: 3187301
Neoproterozoic crystalline metamorphic rocks

Age: Neoproterozoic (541 - 1000 Ma)

Lithology: Amphibolite grade orthogneiss/paragneiss/metavolcanic gneiss

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]

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

Localities in this Region
Show map


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 1993-2019, 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: November 20, 2019 19:25:43 Page generated: May 25, 2019 03:39:56
Go to top of page