Middlesex Co., Massachusetts, USA

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


Mineral List:

Actinolite ☐Ca   2 (Mg,Fe 2+   )   5 (Si   8 O   22 )(OH)   2 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Chelmsford, Middlesex Co., Massachusetts, USA © 2004 Peter Cristofono 'Adularia' KAlSi   3 O   8 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Aegirine NaFe 3+   [Si   2 O   6 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Albite Na[AlSi   3 O   8 ] Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 13:183; 21:75.] Albite var: Andesine (Na,Ca)[Al(Si,Al)Si   2 O   8 ] Reference: [Jaggar, 1898. American Geologist 21(4):203-212] Albite var: Cleavelandite Reference: [] Albite var: Oligoclase (Na,Ca)[Al(Si,Al)Si   2 O   8 ] Reference: [Emerson, B.K. Geology of Massachusetts and Rhode Island, 1917. (USGS Bulletin 597), p.205-206.] Albite var: Pericline Reference: [BMC News, Sept. 2005] 'Albite-Anorthite Series' Reference: [Cook, 1974] 'Allanite' Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Allanite-(Ce) {CaCe}{Al   2 Fe 2+   }[O|OH|SiO   4 |Si   2 O   7 ] Reference: [Rocks & Min.: 13:183; 21:75.] Almandine Fe 2+ 3 Al   2 [SiO   4 ]   3 Reference: [] I-290/I-495 interchange road cuts, Marlborough, Middlesex Co., Massachusetts, USA © 2001 John H. Betts 'Almandine-Spessartine Series' Reference: [P. Cristofono collection, 2006 ] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2008 Peter Cristofono 'Amphibole Group' Reference: [] Amphibole Group var: Uralite Reference: [Jaggar, 1898. American Geologist 21(4):203-212] Analcime Na   2 [Al   2 Si   4 O   12 ] · 2H   2 O Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 21:75.] Anatase TiO   2 Reference: [Rocks & Min.: 22:11.] Aggregate Industries Quarry (San-Val Quarry), Littleton, Middlesex Co., Massachusetts, USA © 2008 Peter Cristofono Andalusite Al   2 [O|SiO   4 ] Reference: [Harvard Museum of Natural History, no.122377] Andalusite var: Chiastolite Reference: [Kunz, Gems and Precious Stones of North America (1892)] Andradite Ca   3 Fe 3+ 2 [SiO   4 ]   3 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities; Rocks & Min.: 21:75.] Anhydrite CaSO   4 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Anorthite var: Labradorite (Ca,Na)[Al(Al,Si)Si   2 O   8 ] Reference: [Jaggar, 1898. American Geologist 21(4):203-212] Somerville, Middlesex Co., Massachusetts, USA © 2008 Peter Cristofono Antigorite var: Bowenite Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] 'Apatite' Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Apatite-(CaF) Ca   5 [F|(PO   4 )   3 ] Reference: [BMC News, Sept. 2005] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono Aragonite CaCO   3 Reference: [P. Cristofono collection] Wayland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono Arsenopyrite FeAsS - (Fe   0.90 Co   0.10 )AsS Reference: [] Augite (Ca,Na)(Mg,Fe 2+   ,Al,Fe 3+   ,Ti)[(Si,Al)   2 O   6 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Augite var: Titanian Augite (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)   2 O   6 Habit: long blades and needles Colour: violet Reference: [Emerson, B.K. Geology of Massachusetts and Rhode Island, 1917. (USGS Bulletin 597), p.206.] Aurichalcite (Zn,Cu)   5 [(OH)   3 |CO   3 ]   2 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Autunite Ca(UO   2 )   2 (PO   4 )   2 ·11H   2 O Reference: [Harvard Mineralogical Museum No. 122310] 'Axinite' Reference: [L. W. White, 1995: Mineralization of Routre 290 Road Cut (Rocks & Minerals May 1997)] Axinite-(Fe) Ca   2 Fe 2+   Al   2 [OH|BSi   4 O   15 ] Reference: [S Pavadore collection] Babingtonite Ca   2 (Fe,Mn)FeSi   5 O   14 (OH) Reference: [Rocks & Min.: 13:183; 19:244; 21:75.] Blueberry Mountain Quarry, Woburn, Middlesex Co., Massachusetts, USA © 2000 John H. Betts Baryte BaSO   4 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Beryl Be   3 Al   2 Si   6 O   18 Reference: [Ex- Warren Johansson collection.] Acton, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Biotite Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Bornite Cu   5 FeS   4 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities; Rocks & Min.: 21:75.] Brookite TiO   2 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities; Rocks & Min.: 22:11.] Somerville, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Brucite Mg(OH)   2 Reference: [Hitchcock, 1841. Geology of Massachusetts] Calcite CaCO   3 Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 13:183; 19:244; 21:75.] Wayland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono 'Chabazite' Reference: [BMC News, Sept. 2005] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono Chabazite-Ca (Ca,K   2 ,Na   2 )   2 [Al   2 Si   4 O   12 ]   2 · 12H   2 O Reference: [P Cristofono collection ] Marlborough Junction locality, Marlborough, Middlesex Co., Massachusetts, USA © 2007 Peter Cristofono Chabazite-K (K   2 ,Ca,Na   2 ,Sr,Mg)   2 [Al   2 Si   4 O   12 ]   2 · 12H   2 O Reference: [Carl Francis, unpublished chemical analysis] I-290/I-495 interchange road cuts, Marlborough, Middlesex Co., Massachusetts, USA © 2009 Peter Cristofono Chalcocite Cu   2 S Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Chalcopyrite CuFeS   2 Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 13:183; 21:75.] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2009 Peter Cristofono Chamosite (Fe 2+   ,Mg)   5 Al[(OH)   8 |AlSi   3 O   10 ] Colour: green Reference: [P Cristofono collection] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2009 Peter Cristofono 'Chlorite Group' Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 21:75.] Chondrodite (Mg,Fe 2+   )   5 [(F,OH)   2 |(SiO   4 )   2 ] Reference: [Hitchcock, 1841. Geology of Massachusetts] Chrysocolla (Cu,Al)   2 H   2 Si   2 O   5 (OH)   4 ·nH   2 O Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Carlisle, Middlesex Co., Massachusetts, USA © 2009 Peter Cristofono Chrysotile Mg   3 Si   2 O   5 (OH)   4 Reference: [Emerson, B.K. Geology of Massachusetts and Rhode Island, 1917. (USGS Bulletin 597), p.206.] Medford, Middlesex Co., Massachusetts, USA © 2007 Peter Cristofono Clinochlore var: Delessite (Mg,Fe,Fe,Al)(Si,Al)   4 O   10 (O,OH)   8 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Clinochlore var: Sheridanite (Mg,Al,Fe)   6 (Si,Al)   4 O   10 (OH)   8 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Clinozoisite {Ca   2 }{Al   3 }[O|OH|SiO   4 |Si   2 O   7 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Marlborough Junction locality, Marlborough, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Cobaltite CoAsS Reference: [www.epa.gov/tio/tsp/download/2001_meet/cambridge_2001.pdf.] Columbite (Fe,Mn)(Nb,Ta)   2 O   6 Reference: [BMC News, Sept. 2005 ] 'Columbite-Tantalite' Reference: [Harvard Mineralogical Museum, Ex. Ed Grew collection] Copper Cu Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Cordierite (Mg,Fe)   2 Al   4 Si   5 O   18 Reference: [Emerson, 1917. Geology of Mass. & Rhode Island] Cuprite Cu   2 O Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Cuprite var: Chalcotrichite Cu   2 O Reference: [Rocks & Min.:61:88.] 'Diatomaceous Earth' Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Diopside CaMg[Si   2 O   6 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Chelmsford, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Dolomite CaMg(CO   3 )   2 Reference: [Gleba, 1978. Mass. Mineral Localities.] Marlborough Junction locality, Marlborough, Middlesex Co., Massachusetts, USA © 2007 Peter Cristofono Epidote {Ca   2 }{Al   2 Fe 3+   }[O|OH|SiO   4 |Si   2 O   7 ] Reference: [Rocks & Min.: 13:183; 21:75.] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono Euxenite-(Y) ? (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)   2 O   6 Reference: [L. W. White, 1995: Mineralization of Routre 290 Road Cut (Rocks & Minerals May 1997)] Ferrohornblende ☐[Ca   2 ][Fe 2+ 4 Al][(OH)   2 |AlSi   7 O   22 ] Habit: good prismatic crystals Colour: black Reference: [P Cristofono collection ] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2004 Peter Cristofono Fluorite CaF   2 Reference: [No reference listed] Forsterite Mg   2 [SiO   4 ] Reference: [Cook, 1974. ] Galena PbS Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Aggregate Industries Quarry (San-Val Quarry), Littleton, Middlesex Co., Massachusetts, USA © 2008 Peter Cristofono 'Garnet Group' X   3 Z   2 (TO   4 )   3 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V) Reference: [Hitchcock, 1841. Geology of Massachusetts] Geikielite MgTiO   3 Reference: [Cook, 1974: Met. Carbonate Rocks of the Nashoba Form.] Goethite α-Fe 3+   O(OH) Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Graphite C Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Grossular Ca   3 Al   2 [SiO   4 ]   3 Reference: [] Marlborough Junction locality, Marlborough, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Grossular var: Hessonite Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Hematite Fe   2 O   3 Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 21:75.] Hematite var: Specularite Reference: [Robinson, S. 1825: A Catalogue of American Minerals, with Their Localities ] 'Heulandite' Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 13:183; 21:75.] Dracut, Middlesex Co., Massachusetts, USA © Paul Gilmore 'Hornblende' Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206.] Iddingsite MgO·Fe   2 O   3 ·3SiO   2 ·4H   2 O Reference: [Emerson, B.K. Geology of Massachusetts and Rhode Island, 1917. (USGS Bulletin 597), p.206.] Illite K   0.65 A   2.0 [][Al   0.65 Si,   3.35 O   10 ](OH)   2 Reference: [Am.Jour.Science 300:630-655 (October, 2000)] Ilmenite Fe 2+   TiO   3 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono Kamphaugite-(Y) Ca(Y,REE)[OH|(CO   3 )   2 ] · H   2 O Habit: spherules Colour: cream/orange Description: See: http://rruff.info/uploads/MMNE284_2.pdf Reference: [Médard E, Cristofono P, Henderson W A (2007) Kamphaugite-(Y) from Ashland, MA (MMNE Newsletter 284:2-5)] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © Etienne Médard Laumontite CaAl   2 Si   4 O   12 ·4H   2 O Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206.] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2008 Peter Cristofono Leucoxene Reference: [Jaggar, 1898. American Geologist 21(4):203-212] Limonite FeO(OH)·nH   2 O Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206.] Somerville, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Magnesite MgCO   3 Reference: [] Magnetite Fe 2+   Fe 3+ 2 O   4 Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 13:183; 21:75.] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Malachite Cu   2 [(OH)   2 |CO   3 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Marlborough Junction locality, Marlborough, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono 'Manganese Oxides var: Manganese Dendrites' Reference: [P. Cristofono collection] Wayland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono Marcasite FeS   2 Reference: [P Cristofono collection] Microcline K[AlSi   3 O   8 ] Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 21:75.] Microcline var: Amazonite Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Molybdenite MoS   2 Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p261; Rocks & Min.: 13:183; 21:75.] 'Monazite' Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Monazite-(Ce) (Ce,La,Nd,Th)PO   4 Reference: [S. Pavadore collection] I-290/I-495 interchange road cuts, Marlborough, Middlesex Co., Massachusetts, USA © 2008 Peter Cristofono Montmorillonite (Na,Ca)   0.33 (Al,Mg)   2 Si   4 O   10 (OH)   2 ·nH   2 O Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] 'Moonstone' Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Muscovite KAl   2 [(OH)   2 |AlSi   3 O   10 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Natrolite Na   2 [Al   2 Si   3 O   10 ] · 2H   2 O Reference: [BMC News, Sept. 2005] Nepheline (Na,K)[AlSiO   4 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] 'Olivine' (Mg,Fe 2+   )   2 [SiO   4 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Opal var: Opal-AN SiO   2 ·nH   2 O Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 21:75.] Marlborough Junction locality, Marlborough, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Orthoclase K[AlSi   3 O   8 ] Reference: [Rocks & Min.: 13:183; 21:75; 61:88.] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono Pargasite [Na][Ca   2 ][Mg   4 Al][(OH)   2 |Al   2 Si   6 O   22 ] Reference: [Cook, 1974. ] Pentlandite (Fe,Ni)   9 S   8 Reference: [Skehan, James. Roadside Geology of Massachusetts, 2001.; American Mineralogist (1930) 15: 1-22] Phlogopite KMg   3 [(OH,F)   2 |AlSi   3 O   10 ] Reference: [Cook, 1974.] Chelmsford, Middlesex Co., Massachusetts, USA © 2007 Peter Cristofono Pickeringite MgAl   2 (SO   4 )   4 ·22H   2 O Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Piemontite {Ca   2 }{Al   2 Mn 3+   }[O|OH|SiO   4 |Si   2 O   7 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Polydymite Ni 2+   Ni 3+ 2 S   4 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Prehnite Ca   2 Al   2 Si   3 O   12 (OH) Reference: [Rocks & Min.: 21:75; 61:88.] Dracut, Middlesex Co., Massachusetts, USA © Paul Gilmore 'Pumpellyite' Reference: [Harvard Mineralogical Museum No. 124166] Pyrite FeS   2 Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 13:183; 21:75.] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono Pyrolusite MnO   2 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] 'Pyroxene Group' Reference: [BMC News, Sept. 2005] Pyrrhotite Fe   7 S   8 , (-4M), also given as Fe   1-x S (x = 0 - 0.2) Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Chelmsford, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Quartz SiO   2 Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 13:183; 19:244.] Lexington, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono Quartz var: Amethyst SiO   2 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Quartz var: Blue Quartz Reference: [P Cristofono collection, 2007] North Woburn, Woburn, Middlesex Co., Massachusetts, USA © 2007 Peter Cristofono Quartz var: Milky Quartz Reference: [Rocks & Min.: 21:75.] Quartz var: Rock Crystal Reference: [Rocks & Min.: 21:75.] Quartz var: Rose Quartz Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Quartz var: Smoky Quartz SiO   2 Reference: [Gleba, 1978. Mass. Mineral Localities.] Rutile TiO   2 Reference: [L. W. White, 1995: Mineralization of Routre 290 Road Cut (Rocks & Minerals May 1997)] 'Scapolite' Reference: [Harvard Mineralogical Museum No. 124157] Chelmsford, Middlesex Co., Massachusetts, USA © 2007 Peter Cristofono Scheelite Ca[WO   4 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Schorl [Na][Fe 2+ 3 ][Al   6 ][(OH)   3 |OH|(BO   3 )   3 |Si   6 O   18 ] Reference: [L. W. White, 1995: Mineralization of Routre 290 Road Cut (Rocks & Minerals May 1997)] 'Serpentine Group' D   2 [Si   2 O   5 ](OH)4 + or - nH   2 O Reference: [] Siderite FeCO   3 Reference: [Harvard Mineralogical Museum No. 119192] Woburn, Middlesex Co., Massachusetts, USA © 2007 Peter Cristofono Sillimanite Al   2 [O|SiO   4 ] Reference: [Yale Peabody Museum #2351] Silver ? Ag Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] 'Soapstone' Reference: [Jackson, 1844. Final Report on The Geology and Mineralogy of NH, p.169 ] Sphalerite (Zn,Fe 2+   )S Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 21:75.] Spinel MgAl   2 O   4 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities; Yale Peabody Museum no. 1722.] Acton, Middlesex Co., Massachusetts, USA © 2008 Peter Cristofono Spinel var: Pleonaste Reference: [Hitchcock, 1841. Geology of Massachusetts] 'Stilbite' Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206.] Condon Quarry, Dracut, Middlesex Co., Massachusetts, USA © Paul Gilmore Stilbite-Ca NaCa   4 [Al   9 Si   27 O   72 ] · nH   2 O Reference: [P Cristofono collection] Stilpnomelane (K,Ca,Na)(Fe 2+   ,Mg,Al,Fe 3+   )   8 (Si,Al)   12 (O,OH)   36 · nH   2 O Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p261; Rocks & Min.: 19:244; 21:75.] Sulphur ? S   8 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Talc Mg   3 Si   4 O   10 (OH)   2 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Talc var: Steatite Mg   3 Si   4 O   10 (OH)   2 Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Thorite (Th,U)[SiO   4 ] Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 21:75.] Thorite var: Orangite Reference: [] Titanite CaTi[O|SiO   4 ] Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 13:183; 21:75.] Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry), Ashland, Middlesex Co., Massachusetts, USA © 2005 Peter Cristofono 'Tourmaline' AD   3 G   6 (BO   3 )   3 [T   6 O   18 ]Y   3 Z Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206.] Tremolite ☐[Ca   2 ][Mg   5 ][(OH)   2 |Si   8 O   22 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities; Rocks & Min.: 21:75.] Chelmsford, Middlesex Co., Massachusetts, USA © 2006 Peter Cristofono Violarite Fe 2+   Ni 3+ 2 S   4 Reference: [Short, M. N. and Shannon, Earl V. (1930). Violarite and other rare nickel sulphides (American Mineralogist 15:1-22.] Vivianite ? Fe 2+ 3 (PO   4 )   2 ·8H   2 O Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities] Xenotime-(Y) YPO   4 Description: Doubly terminated crystals to 2 x 0.3 cm Reference: [Larry White, S. Pavadore, et al. collections] I-290/I-495 interchange road cuts, Marlborough, Middlesex Co., Massachusetts, USA © 2008 Peter Cristofono Zircon Zr[SiO   4 ] Reference: [Januzzi, 1976. Mineral Localities of Connecticut and Southeastern New York State (Taylor Assoc./Mineralogical Press). Chapter: "Massachusetts Mineral Localities," p206; Rocks & Min.: 21:75.] Zircon var: Cyrtolite Zr[(SiO   4 ),(OH)   4 ] Reference: [Gleba, 1978. Massachusetts Mineral & Fossil Localities]

152 entries listed. 96 valid minerals.

Localities in this Region:

USA   Massachusetts Middlesex Co. Acton Harris Quarry McCarthy Quarry Ashland Aggregate Industries Quarry (Bayer-Mingolla Quarry; Trimount Quarry) Ayer Bedford Route 3/62 interchange Belmont Billerica Boxborough Livermore Farm quarry Burlington Mill Street locality Cambridge Carlisle Carlisle Copper Mine Chelmsford Chelmsford lime quarries Concord Dracut Condon Quarry Dracut Nickel Mine (Nickel Mine Hill) Keating Quarry Framingham Badger Farm locality Groton Groton Soapstone quarry Rafferty Quarry Shaker Quarry Holliston Jursek's Crushstone Quarry Hopkinton Hudson Lexington Bull Meadow Hill Littleton Aggregate Industries Quarry (San-Val Quarry) Malden Marlborough I-290/I-495 interchange road cuts Indian Head Hill Maple St. locality Marlborough Junction locality Medford Pine Hill quarries (Medford quarries) Silver mine Newton Reading Rte. 28/128 road cuts Rte. 93/128 road cuts Somerville Granite Street Quarry (Milk Row Quarry) Heath St. quarry Holland Street Quarry Mystic River Quarries (Mystic Quarries) Two Penny Brook Quarry Winter Hill quarry Stoneham Stow Townsend Barker Hill quarry Townsend Quarry Waltham Bear Hill (Massachusetts Broken Stone Co. Quarry) Wayland Westford Chelmsford granite quarry (Fletcher Quarry) Oak Hill Weston Massachusetts Broken Stone Co. quarries Wilmington I-93 road cut Winchester Woburn Blueberry Mountain Quarry North Woburn

The above list 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!

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