3, No. However, due to the vast prehnite deposits that make this stone readily available, it’s not classed as a precious gemstone. : Wisconsin Geological and Natural History Survey Bull. Edition, New York, 532 pages. Webb, A. Mineralogical Magazine, 38, 253. Prehnite is usually cut into cabochons or carved. Prehnite stone is mined mainly in Tibet, India and Burma. ; Rocks & Min. Club Bull. Dana, E.S. Massachusetts Mineral & Fossil Localities; Alfred Lane (1890) Proceedings of the Boston Society of Natural History, Volume 24 pp 91-95, William Prescott (1852) Journal of the Essex County Natural History Society: containing various Communications to the Society pp 78-91, Gleba, 1978. (1868): The Mineralogist's Directory. Young, B. and Butkowski, B. Survey Bull. Bulletin of the New York Mineralogical Club, 3:67; American Mineralogist (1929) 14: 309-311, Observed/collected David S. Bernstein- March-2011. Mins. von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Collector 15: 113-118, Papke, H. (1908); Rocks & Min. ; Rocks & Minerals 84:298-323. I am not sure if anyone even knows where this locality is today or if the type material was ever saved. California Division Mines, Special Report 42, 63 pp. (1900), [Specimen in the Natural History Museum, London]. http://gsa.confex.com/gsa/2001AM/finalprogram/abstract_25905.htm. Min. Hammers, Chisels, Loupes, Cotton-filled boxes, etc. Rocks & Minerals, 82, #6, 472-483. George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. Associated minerals are chlorite, epidote, quartz and laumontite (Holliday, 1955). Heddle, M.F. Prehnite with Calcite. Rocks & Minerals, 74(3), 178-180. Specimens collected by and in the collection of Andrew Kruegel. Micro Probe, v. 8, no. Part 1: Boyleston Quarry. Proceedings of the Liverpool Geological Society, 14, 123-142. The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. Soc. Prehnite was found by Hendrik Von Prehn (1733-1785) during his time as commander of the military forces of the Colony from 1769-1780. 57, n° 387, 349-351. 116 + plates. The stone was said to be discovered in South Africa by Colonel Hendricks Von Prehn, a mineralogist. ), Palache, Charles and Gonyer, F. A. (1971) Pink copper-bearing prehnite from Isle Royale National Park, Michigan. Vol. 1, Manchester, J.G. Vol. : 60:96, Tschernich, R. (1992): Zeolites of the World, 116, Grant (Apr 1974), PA Minerals (PM) (136), Keystone Newsletter; Rocks & Min. : 22:209. Where is Prehnite gemstone found? American Journal of Science 3rd series XXIV:270-278,349-359. Clarke, F.W. Henwood, W.J. History, NY specimen. 5, No. The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. : 334. D. Douglas, Edinburgh. McLintock, W.F.P. 5, No. Prehnite is found in Australia, China, South Africa, Scotland and in New Jersey, USA. ; 3, No. Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. 2, no. (published privately). Mineral compositions and genesis of the ore bodies of the Zhyrychi Cu deposit (North-Western Ukraine). Rocks and Minerals, (1988) 63:104-125; Rocks and Minerals, (1989) 64:314-322. Calif., Volume 58, Number 5, pafes6-7. Prehnite is a mineral that has been known for a long time. The stone was said to be discovered in South Africa by Colonel Hendricks Von Prehn, a mineralogist. : 21:278; 23:914-915.; Rocks & Minerals (1955) 30:502, The Mineralogy of Pennsylvania 1966-1975; Robert C. Smith II, pg. Prehnite Gemstones by Colour. : 1553; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 489. , 495, 501-502. Tobermorite from Castle Hill near Kilbirnie, Ayrshire. ; Wesleyan University collection. East Hampton and Branford, Conn.: Richard Schooner, Ralph Lieser, and Howard Pate. Earth Science: 24(1): 9-14.; Huber, N.K. The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. : 59:157-183 (1984), Peters, J.J.; Rocks & Minerals 80:4 pp234-241. Vol. University of Connecticut Master of Science Thesis. Eckel, E. (1997): Minerals of Colorado; Tschernich, R. (1992): Zeolites of the World, p.113. Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed. : 15:111-115 (1940), Sachs; 59:157-183, Peters, Joseph J. The annual production in the small state is more than 150 tons. 2/3, May/August 2002, Rocks & Min.:60:166. Petrology, structure and genesis of the asbestos-bearing ultramafic rocks of the Belvidere Mountain area in Vermont: U.S. Geologic Survey Professional Paper 1016, Child, 1884: Gazetteer and Business Directory of Windham Co., Vermont. Cordua, W.S. Palache, C. (1946) Some Lost Mineral Localities of New England; 1. http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi, http://www.mineralman.f9.co.uk/quarries/meldon.htm. Prehnite is found in South Africa, China, Australia, Scotland and New Jersey, USA. Mineralogical Record, 22(2), 105-121. (1985), The Thomaston Dam Site, Thomaston, Connecticut; Rocks & Minerals: 60(3): 119-124. (1975): Minerals of Washington, p.86, Cannon, B. 1, Manchester, J.G. The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. Chusi Li, Ripley, E.M., Oberthür, T., Miller, Jr., J.D., and Joslin, G.D. (2008): Mineralium Deposita 43, 97-110. (1931): 77. Emerson, 1917. Gold mineralization in high-grade metamorphic shear zones of the Renco Mine, southern Zimbabwe. Hendrik Von Prehn was the governor of the Cape Of Good Hope, and the commander of the Dutch forces located at the base in South Africa that was close to where the stones were first seen and described. Am. Bull. (1995), Connecticut Mineral Locality Index. Carne, J. Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed. Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District (Part 2). … From the west of the country near Myanmar comes since the 18th century, the treasured in China mineral. Sargent, H.C., 1925. Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed. Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p. Minerals of Washington D.C. Area; L.R. Rocks & Minerals: 13(5): 131. Deposits of this crystal have been been found in South Africa, Australia, China, Scotland, France, Austria, Namibia, Mali, Canada and the USA. Percival, James Gates. If you are requesting a locality be added, please only include, Basic calcium aluminum silicate, sometimes with some iron. (1931): 71. Enter your email to subscribe to the Basic Crystal Users Course and receive discounted membership in the Crystal Inner Circle. Prehnite is in the orthorhombic crystal class, usually found in radiating botryoidal (grape-like) aggregate forms, and rarely as tabular and pyramidal crystals. May p7, J. Wingard, personal observation 4/24/04; various photographs. Jour. Copper, prehnite, malachite., quartz and calcite are also found here (Grant, 1901). The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. Grant, U. S. (1901), Preliminary report on the copper-bearing rocks of Douglas County, Wisconsin, 2nd Ed. p.85-86; Rocks & Min. Geology of the Glasgow District. Mineral Collecting in Pennsylvania, Arthur Montgomery, Minerals of Pennsylvania 1969 p87, A. Geyer, R. Smith III, J. Barnes (1976) Mineral collecting in Pennsylvania: 189-192, Tschernich, R. (1992): Zeolites of the World, 70, Gordon, 1922. 3, No. Personal communication with Jim McGlasson - minID JPG-3FD. Minerals of the "Riverview Drive" quarry, Totowa, NJ, Pollinger, Mel (1975): 2-6. 232, Table 27, The Mineralogy of Pennsylvania 1922-1965; A. Montgomery, pg 90, Minerals of Pennsylvania, Arthur Montgomery 1969 p 91, Lapham & Geyer, 1965. A trend is found such that craters typically smaller than about 10 km excavate smectitic clay minerals, while larger craters have stronger contributions from chlorites. (1931):94. Rocks & Minerals: 13(5): 131. Prehnite with high transparency and clear color has the best meaning and properties. Geological Society of Glasgow. New York, N.Y., Larousse & Co., 108 pages. Africa contains many outstanding sources of Prehnite. Prehnite is a highly desired mineral among collectors, especially intriguing well-shaped form and. American Mineralogist, Volume 61, pages 825-830, 1976, Hall, A. R&M 78:3 p180; Rocks & Minerals 84:298-323. Privett,P.G.,(2011) Formation And Occurrences Of Laumontite And Related Minerals , In The Carolina And Virginia , Middle Mesozoic Zeolite Facies Metamorphism Southern Appalachian Piedmont, Rocks & Min. (1940): New England Notes. Swanson, S.E. & RI, p.104-105. The Canadian Mineralogist, 53:105-132. Prehnite is a calcium aluminum silicate stone with an orthorhombic crystal structure. Vol. Meikle, T.K. Collector: 15:113-118 (1908), Papke; Rocks & Min. Krueger Enterprises, Cambridge, Massachusetts, 117 pages plus maps. (1931): 90. Cooney, R.L. (1941) Section Across Commercial Quarry, Crestmorre, California. Shaub, B. M. (1941): Occurrence and Origin of Babingtonite and Other Minerals From Quabbin Aqueduct, Massachusetts (American Mineralogist 26:121-129. ; Canadian Mineralogist(1983) 21, 37-40, ID'd by Tony Kampf, except the no-brainers: calcite and pyrite, Visual identification (J. Ralph specimen), Rocks & Min.:60:167. (1958): The Mineralogy of the Portland-East Hampton-Middletown-Haddam Area in Connecticut (With a few notes on Glastonbury and Marlborough). 1, Manchester, J.G. ; Rocks & Minerals 84:298-323. 15, no. Confirmed by Michael Hawkins, NY State Museum, 2008. Eaton, Frederick S. (1927): Mineral Localities of Connecticut. Lapidary Journal: 28: 1608-1622, 1654. Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. — Prehnite is found in veins and amygdules in basalt flows at the old Chippewa copper prospects in the SW SW sec. Neuerberg, George Joseph (1951), Minerals of the eastern Santa Monica Mountains, Los Angeles city: American Mineralogist: 36: 158; Sharp, W.E. Vanko, David A. Club Bull. ; Rocks & Minerals 84:298-323. (1996) Field Trip #2, Geology of the Montreal River Monocline: A Traverse through 25 km. A System of Mineralogy, 5th edition. Limited Fe3+ substitutes for aluminium in the structure. Collection of Mark A Gottlieb; Ryerson, Kathleen H. (1972): Rock Hound's Guide to Connecticut. Nevada, Contributions to Mineralogy and Petrology: 81: 277-289. : Wisconsin Geological and Natural History Survey Bull. (1990), Amygdule Minerals of the South Range Quarry, Douglas County, Wisconsin: Rocks and Minerals: 65: 412-415. 
. Chamberlain, Steve C., M.R. (1931): 89. 45, 443-447.; Rocks & Minerals (1995) 70:396-409. (1962). Geoscience Press, Phoenix, p. 114.; Bartsch, Rudolf C. B. McAllister, James Franklin (1955), Geology of mineral deposits in the Ubehebe Peak quadrangle, Inyo County, California. Prehnite is found among the Apophyllite in India. Prehnite is mostly translucent, and rarely transparent. (1912) Notes on the Mineralogy of Renfrewshire. 1, Manchester, J.G. Completely transparent material is extremely rare but might be found in crystals from Asbestos, Quebec. Vol. Visualizza altre idee su Minerali, Cristalli minerali, Gemme. (1984), The Jensen Quarry, Riverside County, California. 2057, 36 pp. 8, p. 274; Zodac, Peter. American Mineralogist: 26: 366. Posted by Padre on February 10, 2020 Prehnite is a rather bizarre looking crystal. Dan R Lynch specimen ( XRD at A.E. It most often occurs as rounded or bubbly crystal masses, and commonly forms odd-shaped, We strive for accurate content and locality information. : 335. Prehnite grounds your energy into the heart of Gaia, connecting and encouraging a link between your heart and the heart of Mother Earth. The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Prasiolite (also known as green quartz, green amethyst or vermarine) is a green variety of quartz, a silicate mineral chemically silicon dioxide.. The orthorhombic crystals typically look bulbous. Cummings, W. L., 2007, Personal communication. description: Bubbly light green crystallized prehnite with minor crystallized calcite. Canfield, F.A. Washington Division of Geology and Earth Resources Open File Report 90-18, Washington State Department of Natural Resources, 277 pages. Idaho Minerals, 2nd edition, Revised and Updated, Ream, Lanny L. 2004. (1965) Wairakite from low grade metamorphic rocks on St. Croix, U.S. Virgin Islands. Jones, Robert W. Jr., (1960): Luminescent Minerals of Connecticut, A Guide to Their Properties and Locations. Rocks & Minerals, vol. M' Phail, H. (1869) On the Carboniferous sections of the Levern Valley, Renfrewshire. Prehnite forms in both odd and distinct formation habits. west of Pittsville (Maas and Van Schmus, 1981). The Graton-Sales volume, New York. Kent, B.P. U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225. Rosemeyer, T. 2011 New from the Keweenaw: Part 4 - Recent Mineral Finds in Michigan's Copper Country. 13 T.42N R.10W. (1931): 84. USGS Jour. Size: 4.0 x 3.0 x 1.8 cm (miniature) Collection: Alvin Pranschke (1984); Mins. The Geological Society of America Field Guide 24, 83-99. Deposits are found in places including South Africa, Australia, China, Scotland and the United States. Mineral. The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Harvard Museum of Natural History, no.120427. Prehnite is an inexpensive gemstone, and due its lack of full transparency it is usually cut into cabochons and beads. Rocks & Minerals, 82, #6, 472-483.; George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. The crystalline form is not so common. It has other names other than Prehnite. 3, No. Prehnite - Namibia Stone. 1, Manchester, J.G. : 335. The Geology of NH: Part III Minerals and Mines. Gleba, P.P. ; Rocks & Min. (1979): Proceedings of the Ussher Society 4, 188-194, [Golley & Williams, 1995, 49 - "Cornish Mineral Reference Manual"]. The Mineralogical Record: 12: 258-319. Ross, D.C. (1976) Prehnite in plutonic and metamorphic rocks of the northern Santa Lucia Range, Salinian Block, California. Contributions to Mineralogy and Petrology: 69: 292-294; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 490. Min. 16 no 7, Thomas Tompson (1840) The London, Edinburough and Dublin Philosophical Magazine and Science Journal Dec 3rd ser. : 59:157-183, Peters, J.J. (1984), Lapidary Jour. Other notable deposits are in China, France Morocco, Namibia, Poland, Spain, Switzerland and the United States (Massachusetts and Michigan). (1963) 38:591-592. It may contain intermixed chlorite and native copper inclusions, and can be confused with thomsonite . The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. (1960); Mineralogical Record: 9:157-179., Peters, T.A. In: Bluck, B. J. (1960): Pseudomorphs after Datolite, Prehnite and Apophyllite from East Granby, Connecticut. Schooner, Richard. (1910): Mineralogical Magazine 15, 377-384; Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Mason, A. ; DeVito, F. (1988) Self-guided field trip, Santa Monica Mountains, Los Angeles County. 36 T.23N R.2E, about 6.5 km. Annual Meeting, Proceedings, Pt. of NYC & Its Environs, NY Min. Tschernich, R. W. (1998). Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 166, 294, 366; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 489. Rocks & Minerals, vol. Carne, J. Garza, Steve (1980): Routes 495 and 290, Marlborough, Massachusetts (Boston Mineral Club Newsletter Dec., 1980). 3, No. Endsleigh Publications. Min. Edward Stanford (London), 168 pp. ; Robinson, Samuel. Prehnite is not classified as a zeolite, but it is frequently found together with calcite, datolite, laumontite, stilbite, and so on. (1931): 93. The largest deposit where two grow entwined is in Mali. Branford, Connecticut. 1984. Soc. Rankin, D.W. Geology of St.John, U.S.Virgin Islands. US Geological Survey Map GQ-494. ; The most extensive and exploited are in the Kayes Region of Mali, where the Prehnite can be found in perfect thick and translucent formations associated with sharp dark Epidote. The Geological Society of America Field Guide 24, 83-99. The Mineralogy of Pennsylvania, Donald R.Privett,P.G.,(2011) Formation And Occurrences Of Laumontite And Related Minerals In The Carolina And Virginia ,Middle Mesozoic Zeolite Facies Metamorphism Southern Appalachian Piedmont, Speer, J.Alexander.,(1987) Evolution of magmatic AFM mineral assemblages in granitoid rocks :The hornblende+melt = biotite reaction in the Liberty Hill pluton, South Carolina :American Mineralogist,Vol. (1968) Bishop tungsten district. (1868). 3 (1931), Manchester. Robinson, Samuel. ; 59-157-183 (1984), Peters, Joseph J. of the Watchungs, Part II, Vitali, G. (1978); NJ Geol.