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Prehnite from
Milford Quarry, Baltimore County, Maryland, USA


Locality type:Quarry
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Milford Quarry, Baltimore County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:859060
Long-form Identifier:1:3:859060:2
GUID (UUID V4):965145e8-38f6-450c-b633-f35551a21171
References
Reference Search (possible matching items)
Journal (article/letter/editorial)
purple, and grey. These géodes are found in Pike County, Ala., which is about 50 miles north of Montgomery...Montgomery. I have found them scattered all over the county, but they are especially abundant just south of...made several trips to Magnet Cove (Hot Springs County) which is about 15 miles east of Hot Springs on...Annual Convention of the Eastern Federation in Baltimore, Md., last September (see Nov-Dec 1956, R & M...is characteristic of of idocrase at the Gillette Quarry in Had- the mineral. I believe this to be one of
Journal (article/letter/editorial)
arch of the Palermo mine, North Groton, Grafton County. Rob Lawrence photo, courtesy Bob Whitmore. 242...at 15:01 05 January 2015 LOCATIONS BY COUNTY Belknap County Alton area: arsenopyrite, galena, quartz...occurrence is particularly noteworthy for Carroll County Albany, Blackberry Crossing (includes the Moose...tall, Government Gravel pit, North Conway, Carroll County. Jeff Scovil specimen and photo. Downloaded by...tall, Middle Moat Mountain, North Conway, Carroll County. Canadian Museum of Nature specimen, Jeff Scovil
Journal (article/letter/editorial)
examples come from the Jeffrey mine (also noted as quarry on some labels), Asbestos, Les Sources Municipalité...(below left). Clear dodecahedra of grossular with prehnite, 7 × 6 cm, from the Jeffrey mine, Québec, Canada...include aegirine, allanite, calcite, epidote, prehnite, titanite, and microcline (Horváth and Gault 1990)...been collected at Dungannon Township, Hastings County, Ontario. The crystals in the collection are associated...is also found in a skarn at Bancroft, Hastings County, Ontario, as brown-red dodecahedra to approximately
Book (edition)
from the Principal Localities in the Middlesex County Region in Connecticut Unclassified Material Page...Directions to the Mineral Localities in the Middlesex County Region in Connecticut .... Additional Locality...booklet devoted to the mineralogy of the Middlesex County region. Invaluable assistance in preparing the...to variscite POLLUCITE-Cesium aluminum silicate PREHNITE-Calcium aluminum silicate PUMPELLYITE-Hydrous...found in the aegirite-granite at the Flatrock (Quarry in Waterford. Its color is dull black to brownish
Journal (article/letter/editorial)
the 12th at the Keystone Trap Rock Quarry at Cornog, Chester County, Pa. thru the courtesy of the owners...14, 1956 To the quarry of the Limestone Products Company, Lime Cr,est, (Sussex County) N . J. There were...temperature and the immense quarry offered an inspiring challenge. The rock of the quarry consists mostly of metamorphosed...chondrodite, Portion of Limestone Products Co., quarry, Lime Crest, Sussex Co., N. J., scene of Mineralogical...Shulman. The Loux family's showing of local (Bucks County) fossil wood was outstanding. There was also a
Book
of Saratoga in Now York, by Doct. John H. Steel. county A (Steel.') 1822." (N. G.) " New Farmer and...island a few feet above the bridge, imperfect. Prehnite, in small nodules, radiated. Made, also in argillite...veins, rare. (Hall.) Staurotide. (Sil 6.219.) Prehnite is found crystallizPrismatic Mica, and lamillated...) PITTSFORD. Granular Limestone. An extensive quarry of marble is opened here. Flexible Marble. Ochrey...often very beautifully shaded and veined. This quarry furnishes annually from 4,000 to 5,000 feet, estimated
Journal (article/letter/editorial)
mine, which was used for a prison; the Allyndale quarry in North Canaan, from w h i c h came the marble...York City and elsewhere; and the Hoadley Neck quarry in Guilford, which furnished the granite base for...through­ out the United States. I n modern times, one quarry has been used by the Navy as an underwater sound...construction, from Danbury just north of Agstone quarry to Iron Works district in Brookfield: albite, allanite...of view 10.2 cm across, 1-84, Newtown, Fairfield County; collected 1960. Weber specimen, Marcelle Weber
Book (edition)
describes sites under of the nearest town and county. and the many maps included book contain such...hydrofluoric acid which it gray and pitted. To from prehnite, heat the mineral in a closed glass tube. Smithsonite...hazards as well. Rocks can fall from a shattered quarry wall, a cliff, or an overhang. Someone on a rocky...associated with the gem material. Oregon thunder a quarry, eggs, for example, are in volcanic beds; tourmaline...pink hue (right) from the Sunnyside Mine, San Juan County, Colorado. MOTTLED AGATE from Chihuahua, Mexico
Report (volume)
Del Norte County; Trinity River, Trinity County; Spanish Creek and Gopher Hill, Plumas County; Placerville...Dorado County; Cherokee Flats, Yankee Hill,and Oroville, Butte County; French Corral, Nevada County; Indian...Indian Gulch and Volcano, Amador County; and Alpine Creek, Tulare County. Other western localities are:...Diamond Basin, Ada County, Idaho; Curry County, Oreg.; and Nelson Hill, near Glacier County, Mont. The Great...Pierce County; Oregon, Dane County; Kohlsville, Washington County; Saukville, Ozaukee County; Eagle,
Journal (article/letter/editorial)
about 35 miles northwest of Flagstaff, in Coconino County, a pineforested volcanic area. The elevation is...in California recently I visited the Los Angeles County Museum in Los Angeles to see the famous collection...in Los Angeles can walk across the lawn to the County Museum for another thrill—the display of some of...Leadville (Lake Co.). Colo., almost at the end of Lake County, I found a specimen of small radiating chrysocolla...DELAWARE-"We were in Delaware May 10 & 11, 1958, in Milford Neck. Kent Co., near Thompsonville. On the property
Journal (article/letter/editorial)
beautiful specimen of apophyllite on sea-green prehnite collected at the famous Bull Run, Virginia locality...becoming but a memory and that, due to vandalism, the quarry is closed to collectors. W e most certainly appreciate...Pennsylvania and Fifth Ave., N . Y. City, N . Y., and Maryland. A sign on a lawn near Marlearn about this friendly...becoming a gem center of up pay dirt at the New Milford, Conn., mine, he may be contacted at 142 Car- the...after four or five practice pieces are Chester County, Pa. The buying collectried. We like the nontechnical
Journal (article/letter/editorial)
wollastonite, 649; lithian tourmaline, 747 Newhurst quarry, Shepshed, Leicestershire, vesigni6ite, 533 Cornwall...glauconite, 753 SCOTLAND France Auchinstarry quarry, Kil~yth, Stirlingshire, julgoldite, 761 Blackcraig... 59 Portsoy, Banffshire, migmatites, 66r Ratho quarry, Edinburgh, julgoldite, 761 Champagnac, Cantal...South-West Africa (Namibia) Tantalite Valley, prehnite, biotite, hornblende, plagioclase, 526 Glauconite...COLORADO Cookstove Mtn., El Paso County, genthelvite, danalite, 6z7 El Paso County, genthelvite, 627 St. Peter's
Journal (issue)
with ALBITE and QUARTZ Himalaya Mine, San Diego County, CA Watercolor by Frederick C. Wilda© REVELATIONS...JONES Cavansite specimen mined from the Wagholi quarry, Pune, India, and displayed as part of the rocks...Lake Owyhee State Park, Malheur County, and also near Goble, Columbia County in 1967. Again, this new mineral...quarries in the Wagholi quarry complex, in Poona, and again in the Lonavala quarry, Maharashtra. What made...vividly in this specimen, mined from the Wagholi quarry, Maharashtra, India. PARENT GÉRY, WIKIMEDIA COMMONS
Book (edition)
MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Valley, California; Herbert V. Corbett of Baltimore, Maryland; Professor Richard Pearl of Colorado Springs...and pitted. To differentiate smithsonite from prehnite, heat the mineral in a closed glass tube. Smithsonite...banded agate and such minerals as thomsonite and prehnite, and in the form of geodes containing crystal...a Jersey's Limecrest quarry, for instance, is open to a year; the Foote quarry in North Carolina one
Book
11ne 2; ••• Amph1bo1ite--see Bolton, Worcester County M1nera1 Loca11t1es. page 85 ••• 11.8 3~ter cerium...•••••••••••••••••'.' •.••.•••• 2--6 Barn.table County ro •• il Localiti ••••••••••••••••••••••••••••...Localit1e•••••••••••••••••••••••••••• 21 Br1.tol County Mineral Localit1 ••••••••••••••••••••••••••••••...24--25 Dukes County Mineral Loeal1tiea •••••••••••••••••••••••••••••• 26--21 Duk •• County Fo.sil Loeal1tie...Local1t1es •••••••••••••••••••••••••••••• 29--3? Bs.ex County Fo ••1l Localit1e ••••••••••••••••••••••••••••••••
Report (issue)
Inner Piedmont and Smith River allochthons _____ 7 Maryland and northern Virginia Piedmont allochthons___...Sauratown Mountains anticlinorium __________ 9 Baltimore Gneiss domes_________________ 9 Manhattan Prong...Fullagar and Odom (1973) for similar rocks in Grayson, County, Va., although Rankin and opening of the lapetus...overprint is relatively tauga County, N.C., and eastern Johnson County, Tenn., minor, the older basement...a discordia intercept age of 1,280 m.y. Grayson County, Va. (Di), yielded an age of 1,149 m.y. (Davis
Book (volume)
600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason
Book (volume)
600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason
Book
Co. Hematite CALERA, Shelby Co. Wavkllite CLAY COUNTY, Sec. 24. T. 19 S R., 7 E. STATUARY, Coosa Co...Co., (W. border of* Marble Crystalline TALLADEGA COUNTY Marble, (crystalline) VALLEY HEAD, DeKalb Co. Hematite...Feldspar HISSOP, Coosa Co., (near) Beryl JACKSON COUNTY Hematite KENNEDYS, Clay Co., (near) Magnetite MILLERVILLE...DELANEY, Madison Co. Quartz, (clear crystals) GARLAND COUNTY Quartz Crystals HOT SPRINGS, Garland Co. Malachite...Malachite HOT SPRINGS DISTRICT Quartz Xls LAWRENCE COUNTY Pearls LITTLE ROCK Quartz Crystals MAGNET COVE,
Report (issue)
Site Number, Site Name ...................... 6 County, State, Quadrangle, Latitude, Longitude .........G: Occurrences located in the Culpeper basin, Maryland and Virginia ..................... 168 H. Section...given in the categories of : 1. name and location ( county, state, quadrangle, latitude, and longitude) 2...stream, or town. County, State, Quadrangle, Latitude, Longitude Information in the county, state, quadrangle...H. M., 1941, The fluorite deposits of Cheshire County, N.H.: New Hampshire State Planning and Development
Journal (article/letter/editorial)
worthwhile. First we visited the famed Strickland Quarry (near Portland, Conn.) which is being worked presently... Since all the water has been drained from the quarry, one won't believe the gigantic hole that was left...actually visits the place. We then visited the Hale quarry in search of manganese dentrites which were 576...time as the quarry was cleaned up of all rock. We then went to the Myron Case feldspar quarry which I believe...interesting visit was paid to the Rock Landing No. 1 quarry. Here in an old wall was exposed the ends of several
Journal (issue)
Rock Malachite Rhodochrosite Skam Rock Gibbsite Prehnite Probably Others Goethite Psilomelane Limonite...so no further descriptions can be given here. Prehnite, maybe one of the most typical, well-known rounded...relatively new epidote crystals with spheres of prehnite from Mali; the best of these are truly remarkable...aggregates from Jordansmuhl, Germany and states prehnite occurs most frequently as platy, granular, cockscomb-like...about every typical prehnite I have ever seen. Klein et al. (1977) indicates prehnite is usually reniform
Book (edition)
Camping $1 *00/day, trailers $2*00/day. **Mariposite Quarry (Mariposa), CoulterM ZUie. CA 95311- Fee: 5f/Xb~...CONNECTICUT Cinque Quarry. Mrs* Cinque, Laurel St., East Haven, CT* $2*00 fee. ♦♦Gillette Quarry, Haddon Neck...fid., Morris, IL 60450. Fossils MAINE Bennett Quarry. See Mrs. Bennett on Lincoln St., Buckfield» ME...available free at store, incl. Mt. Mica & Bennett Quarry, above. Museum in store; no admission charge. If...garnet, rose & smoky quartz, beryl, many others MARYLAND **Nature1s Exotics, ton, MD 20795- 10419 Armory
Book (volume)
the western counties, especially the Clay Center Quarry 12 miles southeast of Toledo but in Ottawa Co....ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay
Book (volume)
the western counties, especially the Clay Center Quarry 12 miles southeast of Toledo but in Ottawa Co....ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay
 
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