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Perthite from
Case Quarries, Portland, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Feldspar Group var: Perthite
Comments:aka - microcline. A major rock-forming component of the pegmatites, the largest and best crystals terminate in the quartz cores and can reach over 20 cm.
Habit:anhedral to subhedral blocky
Colour:white, tan, pale pink
Quality for species:Rock forming mineral/non-crystalline/little interest for collectors.(##)
Abundance at site:Extremely common
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Perthite data
Locality Data:Click here to view Case Quarries, Portland, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:164531
Long-form Identifier:1:3:164531:6
GUID (UUID V4):5ab6d70a-c363-4ae9-9b0d-c52ecf5a32f3
Nearest other occurrences of Perthite
2.2km (1.4 miles) Hollister prospects, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA
4.6km (2.9 miles) State Forest Quarry No. 1 (State Forest #1 Quarry; Clark Hill Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA
7.8km (4.8 miles) Riverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
10.2km (6.3 miles) Blumenthal prospect, Glastonbury, Hartford County, Connecticut, USA
13.1km (8.1 miles) Anderson No. 2 Mica Mine, East Hampton (Chatham), Middlesex County, Connecticut, USA
13.1km (8.2 miles) Bailey prospect, East Hampton (Chatham), Middlesex County, Connecticut, USA
39.2km (24.3 miles) Knapp Prospect, Canton, Hartford County, Connecticut, USA
53.3km (33.1 miles) Curtis Quarry (Southford Quarry; Southford pegmatite; Southbury rose quartz quarry; Bridgeport Woodfinishing Co. Quarry; Hulls Hill), Southford, Southbury, New Haven County, Connecticut, USA
87.0km (54.1 miles) West Kingston, South Kingstown, Washington County, Rhode Island, USA
89.7km (55.8 miles) Smithfield beryl prospect, Smithfield, Providence County, Rhode Island, USA
References
Reference Search (possible matching items)
Journal (article/letter/editorial)
CONNECTICUT Mineral Locality Index Although many sites in Connecticut are no longer open to collectors...H. WEBER 1172 West L a k e Avenue Guilford, Connecticut 06437-1342 E A R L E C. SULLIVAN 17 R o c k y...y R i d g e D r i v e T r u m b u l l , Connecticut 06611-5326 T his locality index is meant to serve...collectors. More often than not, collecting in Connecticut is no longer per­ mitted. Many of the localities...effort has been made to list a l l localities in Connecticut, a small state that is big on mineralization
Book (edition)
THE MINERAL LOCALITIES OF CONNECTICUT AND SOUTHEASTERN NEW YORK * «-• r ** K* ysf^ :' •'’S >- n...250 SPECIES iBooks by Ronald Everett Januzzi CONNECTICUT MINERALS ON PARADE NEW YORK STATE MINERALS ON...THE MINERALOGICAL PRESS 83 Elm Street Danbury. Connecticut IIOIPW MINERALS ON PARAt>E F.tMSTltIP* THREE...to enrich our knowledge of the mineralogy of Connecticut: James Dwight Dana Samuel L. Penfield Edward...Minerals from the Principal Localities in Western Connecticut and Southeastern New York State.............
Book
CONNECTICUT mmES MINERALS V Tourmaline Crystal from Haddam, Connecticut John Hiller, Jr. Hillers CryctaLShop...- CRYSTALS NOT PISTOLS K c^oi c3— A r CONNECTICUT MINES AND MINERALS published privately l i...Shelton, Connecticut I DEDICATION This book is dedicated to the mineral clubs of Connecticut, Continued...1971, John Hiller, Jr, 3 Peters Lane Shelton, Connecticut II CONTENTS 3. 5, l i 6. 7. 8. 9. 10. 11...24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. Connecticut Mineral Clubs Cleaning and Trimming Oxalic Acid
Journal (article/letter/editorial)
I S L O C A T E D about 25 miles northeast of Portland along Interstate Route 95 just across the Andros­...Andros­ coggin River from Brunswick in Sagadahoc County. A mile-wide belt of granitic pegmatites runs from...thirty or more named quarries and numerous unnamed prospects in Topsham. The quarries, all inactive, are...was built in 1872 and leased properties on which quarries were then opened. A jaw crusher, three wet grinding...specimens being collected almost as soon as the quarries were opened. The Topsham history (Wheeler and
Journal (article/letter/editorial)
90 MINERALS FROM 1 CONNECTICUT HILL By Richard Schooner P. O. Box 215 East Hampton, Conn. Collins Hill...Hill, in the town of Portland, undoubtedly represents the most remarkably mineralized area, of its size...Therefore, he is contenting himself, in this particular case, with merely providing an outline of the facts....from the alteration of bismutite, as at the Case Quarries in the same town. BISMUTHINITE should be fairly...locality appears to be microcline or microcline-perthite. PICKERINGITE used to be found in magnificent
Book (edition)
MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...offers substantial rock and gem resources. As old quarries become dumps, old mines fall into ruins and the...collector, especially in Maine, New Hampshire, Connecticut, New Jersey, Virginia, and North Carolina. In...beds, gravel pits, mine dumps, road cuts, and quarries. Some gems agate, petrified wood, crystals may...shafts are obvious dangers; so are water-filled quarries. One of the major sources of accidents occurs
Book (volume)
.........................................94 Connecticut ..............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ......................................................................22 Arizona County Map ................................................................................49 Arkansas County Map ..........................................
Book (volume)
.........................................80 Connecticut ...............................................are capitalized while rocks have been left lower case. This is the 5th printing and each time updates...rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a
Book (volume)
.........................................80 Connecticut ...............................................are capitalized while rocks have been left lower case. This is the 5th printing and each time updates...rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a
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...campaign would produce results, or, in the worst case, eliminate barren areas from further consideration...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
Book
HfiRIN COUNTY FREE LIBRfiRY 311110G386652Q I V Russell P MacFal A COLOR TREASUF FOR COLLECTORS...to Hunting Locations ? i 9 GIVEN TO THE MARIN COUNTY LIBRARY BY MARI N L MTNF.RAT. SOCTETY DAVID...LOOK Freestanding Crystals Cavities Abandoned Quarries and Mines When and How to Go Immovable Areas...boulders one be worn splinters. m «f » in quarries or when collecting come could down hurtling...COLLECTING change rapidly, especially when it comes to quarries and road construction To avoid disappointment
Book (volume)
Vivid blue matched benitoite gems from Sai, Benito County, California, consisting of 52 benitoites and 75...campaign would produce results, or, in the worst case, eliminate barren areas from further consideration...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...........................................
Book
law and common sense dictate that one be worn in quarries or when collecting near unstable rock walls, where...can change rapidly especially when 11 comes to quarries and road construction To avoid disappoint• ment...topographic map of the Delaware q uadrangle o f Keweenaw County, Michigan This ,s an example o f the more picturesque...underground 1n quarries and mines ACTIVE MINES AND QUARRIES Since working mines and quarries are trad1t1onally...specimens once you have reached the mine or quarry In quarries examine the roadways, mine approaches. and the
 
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