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Labradorite from
Lenni, Middletown Township, Delaware County, Pennsylvania, USA


Classification
Species:Anorthite var: Labradorite
Formula:(Ca,Na)[Al(Al,Si)Si2O8]
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Labradorite data
Locality Data:Click here to view Lenni, Middletown Township, Delaware County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:605763
Long-form Identifier:1:3:605763:3
GUID (UUID V4):fe97a4a7-5218-4a12-91c4-309fbebd3c38
Nearest other occurrences of Labradorite
91.0km (56.5 miles) Cornwall Mines (Cornwall Iron Mine), Cornwall Borough (Cornwall), Lebanon County, Pennsylvania, USA
References
Reference Search (possible matching items)
Report (issue)
MINERALOGY OF PENNSYLVANIA 104 Na 2Al 2 Si3 Oi .2H 2 O; SiO 2 47.4, A1 2 O 3 26.8, Na 2 O 16.3, Lenni, Delaware...Delaware County. Crystals. Eyerman, 1911, 11. Composition: Analysis: Fe 2 O3 CaO Na 2 below 115 above...LOCALITIES: Berks County: Birdsboro, and Gickerville; Delaware County: Leiperville, Lenni (druses of colorless...Felton's farm (Chester), and Ward's quarry; Montgomery County: Sumneytown, and Perkiomenville ; Philadelphia:...cut east of Reading (probably Birdsboro), Berks County. White, Smith, 1910, 540. silky mass of radiating
Book (volume)
Mineralogy of Pennsylvania. THE MINERALOGY OF PENNSYLVANIA. TIKIS Mineralogy of Pennsylvania, BY JOHN...(funth's "Preliminary Report on tlir Mineralogy of Pennsylvania,*' luted n* ...Second Geological Survey of Pennsylvania. Academy MINERALOGY OF PENNSYLVANIA. 1. SILVER. (4)i According...occur in Berks countv, at North Reading, in Oley township, and on Cushion Mt. 2. Native copper east of...page in Dr. Genth's Report. MINERALOGY OF PENNSYLVANIA. 5. GALEN1TK. (10) Galcnite occurs in many
Journal (article/letter/editorial)
large part of Philadelphia is covered with the Delaware River gravels and clays, but most of the streams...bank. When the inclined plane was abandoned the Pennsylvania Railroad made a curved cut through these rocks...with that found on Ridley and Crum Creeks in Delaware County, contained segregated masses of coarse ort...halotrichite occur occasionally, but on the Pennsylvania Railroad at 59th street there was an old quarry...northwesterly line between Philadelphia and Mont(romery County, it has been largely quarried for over a century
Report (volume)
from Nevada county, California............................. Spessartite garnet from Llano county, Texas ...from Pulaski county, Virginia ...»......... *............ II. Stone from Washington county, Kansas.......altered biotite from the zircon mine in Henderson county, K 0., and the protovermiculite from Magnet cove...water determinations, are as follows: Hen dors on county. Protovorni iculite. Molecular Analysis. Molecular...[BULL. 90. LABORATORY REPORT, 1890-'91. Hendevson county. Protovermieulito. Molecular Analysis. Molecular
Book (edition)
mine, Racooche Valley, White Co. 1866 Vs White County Daniel Light form, % mi. NE Less than 1887 ...Alabama has yielded a 4i%4 carat diamond from Shelby County, 30 miles south of Birmingham, found about 1900...Siding in St. Clair County, 20 miles northeast of Bir- mingham. One found in Lee County in 1901 weighs 4^...have a cornfield at Pounding Mill, Tazewell County, Va. A 3 carat stone, bought by a Knoxville...Luttrell, Another of .78 carat, light yellow, Union County. was reported found in 1888 on the Henry Burris
Journal (article/letter/editorial)
(289) 290 F. BASCOM— PIEDMONT DISTRICT OF PENNSYLVANIA Page Igneous rocks.................. ........Geologic history o f the Piedmont district o f Pennsylvania.................................. 322 Résumé...R E L A T I O N S The Piedm ont district of Pennsylvania, forming with a width of 65 miles the southeast...New York, and in New England. The valley of the Delaware is the southeast boundary of this belt. From this...crest, from which the relatively flat slope to the Delaware can be surveyed. Downloaded from https://pubs
Journal (article/letter/editorial)
HARMOTOME AND BARIUM FELDSPAR AT GLEN RIDDLE. PENNSYLVANIA Anorpn E. Mernn. Bryn Maur College,Bryn Mawr...flanked by serpentine at Glen Riddle, Delaware County, Pennsylvania. The dike is composed of two distinct...gabbroic border phase consisting chiefly of sodic labradorite and 25 per cent biotite. (2) A crumblycentral...railroad cut along the Octoraro Branch of the Pennsylvania Railroad, just west of the Glen Riddle station...poorly defined) r A. GIen Riddle station. Pennsylvania Railroad, Octoraro Branch. B. Lima road. Penna
Book (edition)
«s m •p ■* ; sms •v ■1 mm D 'A ©F PENNSYLVANIA AND NEW JERSEY By Scott Stepanski and Karenne...changes due to man or nature, Gem Trails of Pennsylvania and New Jersey, its publisher and all other...Physiographic Map of Pennsylvania and New Jersey 5 6 7 9 10 12 PENNSYLVANIA SITE NO. PAGE NO. 1...lt38ol Township Road (PA) Is. R-10061 State Road (PA) EH] Forest Road (PA) | 626 | Spur 563 County Route... OVERVIEW MAP 6 KEY TO SITES ON MAP NEW JERSEY PENNSYLVANIA SITE NO. SITE NO. 1 2 3 4 35 36 37 38 5
Journal (article/letter/editorial)
MYLONIZATION OF HYBRID ROCKS NEAR PHILADELPHIA, PENNSYLVANIA BY ELIZABETH ARMSTRONG CONTENTS Abstract.....a quarter of a mile southeast ofSpring Mill, Pennsylvania.. 678 Plate Facing page 1. Geologic and structural...Bucks counties in southeastern Pennsylvania and in Burlington County in New Jersey and is part of the...Montgomery County-Delaware County line and extends northeastward to 4 miles northeast of the Delaware River...gneiss was made in H. D. Rogers’ Geology of Pennsylvania (1858) where it is called a syenite. In this
Book (edition)
describes sites under of the nearest town and county. and the many maps included book contain such...such as creates the unique beauty of opal or labradorite, the starry splendor of star sapphire and garnet...pink hue (right) from the Sunnyside Mine, San Juan County, Colorado. MOTTLED AGATE from Chihuahua, Mexico...black. This is from Siskiyou County, California. z'^m-: LABRADORITE, the feldspar of peacock is found...as Lake Superior agate. SODALITE from Hastings County, Ontario, Canada, is deep-blue mottled with flesh-colored
Report (issue)
Rocks Of the Piedmont Upland Maryland, Pennsylvania And Delaware By NANCY C. PEARRE and ALLEN V. HEYL,...districts ______ -._-_____-_____-___._. Montgomery County, Md_-_-_---_---_-_-----------_-__--_-_-_Soldiers...descriptions_______________________________________ Montgomery County, Md___-_______________________.__ Etchison mine_____-_-...Index map of the Piedmont Upland, Maryland, Pennsylvania, Page and Delaware__.____________________-____--_-_-_--709...concentrates from lode mines and placer deposits in Pennsylvania and Maryland before 1900-___-_-__.-______--
Book (volume)
chalcedony, jasper and gem petrified wood. BUFFALO COUNTY KEARNEY, area gravel bars and pits along the Platte...townagate, chalcedony, jasper, petrified wood. CASS COUNTY WEEPING WATER, SE, on rd. to Nehawka, in the Snyderville...chalcedony, jasper, fossils. CHERRY COUNTY VALENTINE, in the Sandhills county along the Niobrara R. and Minnechaduza...gem qualityagatized and opalized wood. DAWES COUNTY CHADRON, in N part of Co. and as far W as Crawford...woods, etc. DAWSON COUNTY GOTHENBURG, in sand pitspetrified palm wood. DEUEL COUNTY CHAPPELL, all regional
Report (volume)
............................ 16 34 42 81 97 Delaware............................................................................................ Pennsylvania...............................................value. Some minerals, such as the copper ores of Pennsylvania, are included in the list not because they occur...and Ehrenfeld, Frederick, Minerals of Pennsylvania: Pennsylvania Top. and Geol. Survey Comm. Kept. No...Boulder. Connecticut_ Prof. William N. Rice, Middletown. Prof. H. E. Gregory, Sheffield Scientific School
Book (volume)
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, area...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA
Book (volume)
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, area...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay...HIGHLAND COUNTY SINKING SPRING, area ore deposit (most important in Ohio) ⎯Hematite. HOCKING COUNTY AREA
Book (edition)
magnetite occurring in mica at Pennsbury, in Pennsylvania. Arborescent delineations over surfaces of rock...structure. In the polysynthetic twins of albite, labradorite, and other triclinic feldspars, if the slice...number of such bands observed in a slice of labradorite (the fracturing is a consequence of a movement...slowly on turning in different positions, as in labradorite. Opalescence when there is a milky or pearly...with nitIn some cases (as leu cite, scapolite, labradorite, ric acid. etc.), where no jelly is formed, there
Book (volume)
Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal step cut violetish pink...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...Cantlin, Ellis, [D; Jeannette B. Carillo, Gem Center USA, EI Paso, TX; Gary Christopher, The Prospectors Cache...Resources, Vancouver, BC; Barbara L. Muntyan, Ouray County Historical Society, Ouray, CO; Merrill O. Murphy...sne-aseseeateeCounty, Can tess ccraccacaerscsascn enaeantsrse Figure
Book (volume)
references, among them may be mentioned: Vermont, Pennsylvania, North Carolina, Oregon, Kansas, Alabama, Ohio...Kobuk jade locality. Descriptions of San Diego County, California, gemstones and the mines in which they...the generous assistance of many residents of that county. My special thanks are extended to Elbert H. McMacken...in the small cavities in limestone in Herkimer County, New York, only one quartz crystal may be found...beautiful and intense multi-colored reflections of labradorite feldspar, an effect sometimes called labradorescence
Journal (article/letter/editorial)
(6) albite, (7) oligoclase, (8) andesine, (9) labradorite, (io) bytownite, (I1) anorthite, (i2) plagioclase...this phenomenon is the "microcline" from San Diego County, California. The suggestion is strong that sufficient...heating. This proved to be the case. The San Diego County material was crushed, sieved, and sized, and then... Working with natural microcline from Mitchell County, North Carolina, and employing "thermal apparatus...subdivisions, albite, oligoclase, andesine, labradorite, bytownite, and anorthite. These subdivisions
Report (volume)
...................... 1. Rocks from Aroostook County..... ^..................'........... 2. Miscellaneous.............................................. Pennsylvania...... .^......................................1. Elliott County dike............................................... 2. Crittenden County dike............................................. 3. Colfax County................ I................................142 3. Plumas County............................................... 144 4. Butte County..............
Book (edition)
MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...such as creates the unique beauty of opal or labradorite, the starry splendor of star sapphire and garnet...as size into these pockets amazonstone and labradorite. Perhaps only one percent of the pegmatites are...corners of the claimed area, and filing in the county land agent's office. In addition he has to show...called bediasites from Bedias, a town in Grimes county. Gold is a subject by itself, but because the gem
Journal (issue)
WEST PARIS. MAINE STA N L E Y 1. PERHAM OXf'ORO COUNTY MINIEIIA L S AN D GE M S A SPECIALTY A M BER M...commercial quantities in Little Borax Lake, Lake County. A considerable tonnage of borax was recovered...Borate in San Bernardino County, and another one at Lang, Los Angeles County. The two latter have been...BY P ,\CIFJC COAST BORAX COMPANY, SHOSHONE, INYO COUNTY, CALIFORNL\. 74 ROCKS AND l\1INERALS 0 R ...discovered on the l\fojave Desert near Kramer in Kern County ,associated with borax, some colemauite and ulexite
Book (volume)
Vivid blue matched benitoite gems from Sai, Benito County, California, consisting of 52 benitoites and 75...Cantlin, Ellis, ID; Jeannette B. Carillo, Gen1 Center USA, El Paso, TX; Gary Christopher, The Prospectors Cache...Resources, Vancouver, BC; Barbara L. Muntyan, Ouray County Historical Society, Ouray, CO; Merrill 0. Murphy... 15 Figure 6. Dallas Gem Mine in San Benito County, CA..............................................Benitoite recovery from alluvial deposits, San Benito County, CA ................ 29 Figure 8. Title page
Report (volume)
crystalline rocks Maine 1. Rocks from Aroostook 'County 2. Miscellaneous rocks5 v New Hampshire 5 Vermont...Adirondack region 2. Miscellaneous rocks New Jersey Pennsylvania Maryland and the District of Columbia 1. Peridotite...Carolina Georgia Kentucky 1.. Elliott County dike 2. Crittenden County dike Tennessee Missouri Arkansas Oklahoma...Grande Canyon 5 2. Mount Taylor region 5 3. Colfax County 4. Miscellaneous rocks 5 Arizona 1. Globe district...Plumas County 4. Butte County 5 5. Sierra County5 6. Nevada City and Grass Valley 5 7. Placer County 8. Eldorado
Book (edition)
produced by tinning the mineral is less rapid Ex. labradorite. milky or pearly reflection from the interior...Ber. Ak. Miinchen, 1869. HdUtihofer. Sur le Labradorite colore Arch. Neerland., iii., 32, 1868. Vogelsang...desired to separate augite, hornmicroscope. labradorite and albite are taken as indicablende, oligoclase.../A 7 near 120° Q. raiio for oligoAnorthite ; labradorite ; andesite ; hyalophano 1 3. ; R R= : : clase...and other parts of North Wales in Scotland in the county of Wicklow, Ireland ; in Sweden, at Edelfors. In
 
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