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Tilly Foster Iron Mine, Brewster, Town of Southeast, Putnam Co., New York, USA

This page kindly sponsored by Roger Ericksen

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold ?1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Group 3 - Halides
Group 4 - Oxides and Hydroxides
var: Nemalite4.FE.05Mg(OH)2
Lepidocrocite ?4.FE.15γ-Fe3+O(OH)
Opal4.DA.10SiO2 · nH2O
var: Rose Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Ankerite' ?5.AB.10Ca(Fe2+,Mg)(CO3)2
Hydromagnesite5.DA.05Mg5(CO3)4(OH)2 · 4H2O
Hydrotalcite5.DA.50Mg6Al2(OH)16[CO3] · 4H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Hexahydrite7.CB.25MgSO4 · 6H2O
Jarosite7.BC.10KFe3+ 3(SO4)2(OH)6
'Melanterite'7.CB.35Fe2+(H2O)6SO4 · H2O
Posnjakite7.DD.10Cu4(SO4)(OH)6 · H2O
Serpierite ?7.DD.30Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Szomolnokite ?7.CB.05FeSO4 · H2O
Group 8 - Phosphates, Arsenates and Vanadates
'Autunite'8.EB.05Ca(UO2)2(PO4)2 · 11H2O
Erythrite8.CE.40Co3(AsO4)2 · 8H2O
Group 9 - Silicates
var: Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
'Chrysocolla'9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
var: Leuchtenbergite9.EC.55Mg5Al(AlSi3O10)(OH)8
var: Diallage9.DA.15CaMgSi2O6
Hisingerite ?9.ED.10Fe3+2(Si2O5)(OH)4 · 2H2O
Kaolinite ?9.ED.05Al2(Si2O5)(OH)4
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
'Natrolite'9.GA.05Na2Al2Si3O10 · 2H2O
Palygorskite9.EE.20(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
var: Steatite9.EC.05Mg3(Si4O10)(OH)2
Thomsonite-Ca9.GA.10NaCa2[Al5Si5O20] · 6H2O
Thorite ?9.AD.30Th(SiO4)
Vermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Unclassified Minerals, Rocks, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'var: Byssolite'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fayalite-Forsterite Series-
Psilomelane ?-
Pyroxene Group-
Riebeckite Root Name-◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
'var: Crocidolite'-◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
Serpentine Subgroup-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'var: Marmolite'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mather, W. W. (1839), Third Annual Report on the Geology of the First Geological District of the State of New York. Albany, New York.
Rogers, H. D. (1840), Final report on the geology of the State of New Jersey. 12-43.
Beck, L. C. (1842), Mineralogy of New York. W. and A. White and J. Visscher, Albany, New York.
Mather, W. W. (1843), Geology of New York, Part I, Comprising Geology of the First Geological District. Albany, New York.
Cook, G. H. (1868), The Geology of New Jersey. Newark, New Jersey.
Breidenbaugh, E. S. (1873), On the minerals found at the Tilly Foster iron mines, N.Y. American Journal of Science: third series: 6: 207-213.
Dana, James D. (1874), On serpentine pseudo-morphs and other kinds from the Tilly Foster iron mine, Putnam County, New York. American Journal of Science, third series: 8: 371-381, 447-459.
Dana, Edward S. (1875), Preliminary notice of chondrodite crystals from the Tilly Foster mine, Brewster, New York. American Journal of Science, third series: 9: 63-64.
Dana, Edward S. (1875b), On the chondrodite from the Tilly Foster mine, Brewster, New York. American Journal of Science, third series: 10: 89-103.
Merrill, F.J.H. and Britton, N.L. (1883), Annual Report of the State Geologist for 1883. 27-77.
Merrill, F.J.H. and Britton, N.L. (1885), Annual Report of the State Geologist for 1885. 36-55.
Wendt, A. F. (1885), The iron mines of Putnam County, N. Y. Transactions of the American Institute of Mining Engineers: 13: 478- 488.
Pelletreau, William (1886), History of Putnam County, New York. W.W. Preston, Philadelphia.
Putnam, B.T. (1886), Report on the mining industries of the United States. Tenth Census, 1880.
Ruttmann, F. S. (1887), Notes on the geology of the Tilly Foster ore-body, Putnam County, New York. Transactions of the American Institute of Mining Engineers: 15: 79- 90
McDowell, F. H. (1889), The reopening of the Tilly Foster iron-mine. Transactions of the American Institute of Mining Engineers: 17: 758-767.
Landis, E. K. (1900), The Tilly Foster mine. The Journal of the Franklin Institute: 150: 223-226.
Whitlock, H. P. (1903), List of New York mineral localities. Bulletin of the New York State Museum: 70: 70-71.
Stewart, A. C. (1908), The magnetite belts of Putnam County, N. Y. The School of Mines Quarterly: 29: 283-294.
Koeberlin, F. R. (1909), The Brewster iron bearing district of New York. Economic Geology: 4: 713-54.
Colony, R. J. (1921), The magnetite iron deposits of southeastern New York. New York State Museum Bulletin: 249-250.
Manchester, J. G. (1931), The Minerals of New York City and its Environs. New York Mineralogical Club, Bulletin: 3(1), New York, NY, 165 p., 127 plates.
Doherty, E. (1934), Report on the Rocks and Minerals Association Second National Outing. Rocks and Minerals: 9(7): 105.
Zodac, Peter. (1934), Club and society notes. Rocks and Minerals: 9(6): 91.
Elwell, Wilbur. (1936), Mineral collecting by hydroplane. Rocks and Minerals: 11(6): 92 -93.
Trainer, John N. (1938), Tilly Foster up-to-date. Rocks and Minerals: 13(10): 291-303.
Zodac, Peter. (1938), Some recent finds at Tilly Foster. Rocks and Minerals: 13(6): 180-181.
Trainer, John N. (1939), Tilly Foster up-to-date. Rocks and Minerals: 14(2): 50-52.
Trainer, John N. (1940), Another year at Tilly Foster. Rocks and Minerals: 15(4): 126–128.
Trainer, John N. (1941), The fifth year at Tilly Foster. Rocks and Minerals: 16(4): 122-126.
Rosch, J. (1942), A Tilly Foster incident. Rocks and Minerals: 17(1): 16-17.
Trainer, John N. (1942), Sixth year at Tilly Foster. Rocks and Minerals: 17(1): 8-9.
Trainer, John N. (1943), More about Tilly Foster. Rocks and Minerals: 18(6): 168-169.
Prucha, John J. (1956), Geology of the Brewster magnetite district of southeastern New York. New York State Museum and Science Service Circular 43.
Bourne, W. (1957), Trip to Tilly Foster, New York. Rocks and Minerals: 32(5-6): 258-260.
Januzzi, Ronald E. (1966), A Field Mineralogy of the Tilly Foster Iron Mine. Mineralogical Press, Danbury, Connecticut.
Sinkankas, John. (1966), Gemstones of North America, Van Nostrand, Princeton, N.J. 675 p.
Frondel, Clifford. (1970), letter to Ronald Januzzi dated January 2 1970, in reference to loss of access to the Tilly Foster mine site.
Nuwer, Henry (1971), The Tilly Foster mine. Rocks and Minerals: 46(3):147-154.
Januzzi, Ronald E. (1976), The Mineral Localities of Connecticut and Southeastern New York State. Mineralogical Press, Danbury, Connecticut.
Januzzi, Ronald E. (1989), Tilly Foster Mineral Chart. Mineralogical Press, Danbury, Connecticut.
Roe, A. (1990), Washington A. Roebling—his life and mineral collection. Mineralogical Record: 21(1): 13-30.
Isachsen, Y. W., Landing, E., Lauber, J. M., Rickard, L. V., and Rogers, W. B., editors. (1991). Geology of New York - A Simplified Account. Educational Leaflet No. 28, Albany, New York.
Tschernich, Rudy. (1992), Zeolites of the World. Geoscience Press, Phoenix, 116.
Januzzi, Ronald E. (1994), Mineral Data Book - Western Connecticut and Environs. Mineralogical Press, Danbury, Connecticut.
Lininger, Jay. (1997), Iron smelting in the Hudson Highlands: a retrospective of the Greenwood Ironworks. Matrix: 5(4): 146-151
Nightingale, Stephen L. (2001a), Mineral Species Reported to Occur at the Tilly Foster Iron Mine. Matrix: 9(2): 73-77.
Nightingale, Stephen L. (2001b), Tilly Foster Pseudomorphs. Matrix: 9(2): 78-79.
Nightingale, Stephen L. (2001c), The Tilly Foster Iron Mine: Southeast, Putnam County, New York. Matrix: 9(2): 51-72.
Smock, J. C. Iron mines and iron-ore districts in the State of New York. Bulletin of the New York State Museum of Natural History: 7: 2223.

External Links

The New York State Museum www.nysam.org/foster/

19th century American Journal of Science search page: http://diva.library.cmu.edu/ajs/search.jsp

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