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Magnesio-hornblende from
Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Magnesio-hornblende
Formula:◻Ca2(Mg4Al)(Si7Al)O22(OH)2
Comments:Crystalline masses matching the description of "actinolite" by Schooner with grossular and rutile, part of a calc-silicate assemblage in the Collins Hill Formation hosting the pegmatite. Identified by TEM-EDS in 2016.
Habit:acicular masses
Colour:dark green
Confirmation
Validity:Confirmed
Confirmation Methods:TEM
Associated Minerals Based on Photo Data:
Grossular2 photos of Magnesio-hornblende associated with Grossular at this locality.
Rutile2 photos of Magnesio-hornblende associated with Rutile at this locality.
Data
Mineral Data:Click here to view Magnesio-hornblende data
Locality Data:Click here to view Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:1067674
Long-form Identifier:1:3:1067674:1
GUID (UUID V4):2d6ab3ea-ed91-4f60-81dc-ead678a7d0c5
Nearest other occurrences of Magnesio-hornblende
7.7km (4.8 miles) East Hampton (Chatham), Middlesex County, Connecticut, USA
40.8km (25.4 miles) Becker Quarry (Becker's Quarry), West Willington, Willington, Tolland County, Connecticut, USA
52.4km (32.6 miles) Town Farm Road, Litchfield, Litchfield County, Connecticut, USA
62.8km (39.0 miles) Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA
62.9km (39.1 miles) Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA
74.8km (46.5 miles) Iron ore prospect, Kent, Litchfield County, Connecticut, USA
88.5km (55.0 miles) Spring Lake, Harrisville, Burrillville, Providence County, Rhode Island, USA
References
Reference Search (possible matching items)
Journal (article/letter/editorial)
Found Elsewhere? Manuel Robbins Manning Lane Cherry Hill, New Jersey 08003 T A K I N G T H E Q U E S T I...originate from the mines at Franklin or Sterling Hill in New Jersey. But if the question is rephrased...species which fluoresce at Franklin or Ster­ ling Hill can be found in other localities, and will they...The mineral assemblage at Franklin and Sterling Hill is looked upon as unique for a number of reasons...reasons, the mineral deposit at Franklin-Sterling Hill deposit is considered singular, unique. What is
Journal (article/letter/editorial)
clinoamphiboles (grunerite, tschermakitic hornblende, magnesio-hornblende,and a riebeckite-arfvedsonitesolid...as the Fe3*content of tschermakitic hornblende, magnesio-hornblende,and riebeckite increases,reflecting...Ca Na K cl F Tschermakitic Magnesiohornblende hornblende 49.19 0.03 0.51 44.30 N.D. 0.66 3.21 O.32 0...73-318, Spear, 1982); a magnesio-hornblendefrom Strickland quarry, Portland, Vermont, for which petrologic...hereafter referred to as riebeckite, from a granitic pegmatite(Scofieldand Gilbert, 1982). Separationtechniques
Journal (article/letter/editorial)
temperatures of the latter unit are estimated by hornblende–plagioclase thermometry at 580±40°C. Thrusting...1984; Dallmeyer and Lécorché 1989; Martyn and Strickland 2004). A series of overthrust sheets, which comprise...which was recently classified as an IOCG type (Strickland and Martyn 2002). In particular, the geometry...of the Akjoujt area (modified after Martyn and Strickland 2004). A complex set of D2 and D3 thrust faults...Joul represent local prospects for Cu and Au (Strickland and Martyn 2002) 5°65’’E ? Oc Or Akjoujt ar
Book (volume)
publisher. Cover photograph: Fluorapatite, Pulsifer quarry, Auburn, Maine (2.2 cm specimen), Harvard Mineralogical...greater variety of minerals are found in Oxford County, alone, than anywhere else on Earth of comparable...than Maine's, as well. An area smaller than Oxford County in Murmansk Ob last, Kola Peninsula, Russia, has...gem-producing areas in the United States, admittedly. Connecticut has produced a few tourmalines, aquamarines,...However, San Diego County, California, is arguably the most important gem-pegmatite district in North
Corporate Document (Series)
a broad reference such as 'Pieman River' or 'Middlesex' has been retained due to a lack of more specific...least one sample so-labelled is probably from Broken Hill, NSW. Catalogues of the major mineral finds have...Cleveland tin deposit, Avebury nickel mine, Colebrook Hill copper-bearing axinite skarn and Mt Ramsay tungsten...in the 1880s and 1890s, including the Colebrook Hill copper mine south of Rosebery and the Balfour copper...clinochlore), based on specimens from Stichtite Hill,near the Adelaide mine at Dundas. AS. Wesley, the
Book (edition)
Co\·er photo: \\ 7 ulfenite, Rowley Mine, Maricopa County, 4 cm high specimen, Evan and Melissa Jones Collection...six other special lists of minerals, such as pegmatite minerals, contact-metamorphic minerals, and secondary...gemandmineralmuseum.arizona.edu) is located in the old Pima County Courthouse building at 115 North Church Avenue...on the market. The mines at Bisbee, in Cochise County, have produced large quantities of gem-quality...mineral stamp issued in 1992. At Morenci, in Greenlee County, gem-quality azurite was also commercially recovered
Book
MineralogicalRecord.com I IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac, Ariege. Operated for talc since the beginning...beginning of the 20th century, the Trimouns quarry became well known to collectors around 1990 for the...long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...5 cm (Grice and Gault, 1981). CONNECTICUT Litchfield, Litchfield County. Ilmenite masses and crystals
Book
Truran, Jr. and A. Heger University of Chicago, IL, USA 1.01.1 INTRODUCTION 1.01.2 ABUNDANCES AND NUCLEOSYNTHESIS...Ivans I. I., Burles S., Beers T. C., Primas F., Hill V., Truran J. W., Fuller G. M., Pfeiffer B., and...K. Zinner Washington University, St. Louis, MO, USA 1.02.1 INTRODUCTION 1.02.2 HISTORICAL BACKGROUND..., Bradley J. P., Joswiak D. J., Brownlee D. E., Hill H. G. M., and Genge M. J. (2002) Possible in situ...Guber K. H., Winters R. R., Raman S., Harvey J. A., Hill N. W., Blackmon J. C., Bardayan D. W., Larson D
 
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