New Gallery #105

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Photos recently added to NH species galleries, set #105.
CALCITE Rt. 101 road cut, Bedford, NH 13 mm cluster of milky-clear, rough, hexagonal calcite crystals	Species: CALCITE Locality: Rt. 101 road cut, Bedford, NH Specimen Size: 13 mm cluster of milky-clear, rough, hexagonal calcite crystals Field Collected: Tom Mortimer - 11/19 Catalog No.: TBC Notes: A single camera shot. Cluster was too large to use with my photo stacking options. Not a lot of contrast for individual crystals.
GEDRITE Gilsum Road ledge, Surry, NH 6 cm specimen with glassy, dark gray-brown, gedrite blades in pale-blue cordierite.	Species: GEDRITE Locality: Gilsum Road ledge, Surry, NH Specimen Size: 6 cm specimen with glassy, dark gray-brown, gedrite blades in pale-blue cordierite. Minor pyrite is also present. Field Collected: Tom Mortimer Catalog No.: 1614 Notes: Gedrite in cordierite is reported from this site. A polished grain EDS analysis of a sample from this specimen (BC316) gave an APFU calculation of: (Mg_5.12,Fe_2.28,Ca_0.54)Al_3.08Si_6.0O_24.52 , normalized for 6 Si. With Mg >> than Fe, earlier literature would have identified this as magnesio gedrite. Now the IMA identifies Mg rich gedrite as simply gedrite. Note, the presence of aluminum differentiates gedrite from anthophyllite, (also present at this site). Mindat.org gives a gedrite chemistry as: [ ]{Mg₂}{Mg₃Al₂}(Al₂Si₆O₂₂)(OH)₂ and reports that calcium is a common impurity in some gedrite. Of coarse, an EDS analysis has no way of suggesting how to assign elements to the various parenthesis groups. Additionally, Mindat.org gives a ferro-gedrite chemistry as: [ ]{Fe₂}{Fe₃Al₂}(Al₂Si₆O₂₂)(OH)₂ . American Mineralogist article "Nomenclature of the amphibole supergroup", Volume 97, pages 2031–2048, 2012, states the [ ] = "A" may be filled by Na, K, Ca, Pb, Li, based on a general formula for the amphibole-supergroup minerals as AB₂C₅T₈O₂₂W₂ .
BASTNASITE Government Pit, Albany, NH 0.7 mm crystal, oblique frontal view BASTNASITE Government Pit, Albany, NH 0.7 mm crystal top view Tabular-hexagonal form	Species: BASTNASITE Locality: Government Pit, Albany, NH Specimen Size: 0.7 mm crystal, oblique frontal view and top view Field Collected: Found in large box of uncleaned, untrimmed, Government Pit specimens collected by Leroy Grant of Albany, NH (deceased). Collected in the 1970's. Catalog No.: u2241 Notes: A visual ID. Crystal embedded in biotite mica, appears to be tabular-hexagonal form, third photo. This form is common for bastnasite. The R&M article by Bearss & Janules, May/June 1992, pg.160 states: "bastnasite-(Ce) is an extremely rare mineral at Government Pit, occurring as minute (>1 mm) tabular, hexagonal, crystals that are butterscotch in color and have a resinous but frosted luster. The determination of bastnasite-(Ce) was by SEM EDS and XRAY diffraction."
ALBITE on Stilpnomelane Government Pit, Albany, NH 1.5 mm albite crystal on stilpnomelane	Species: ALBITE on Stilpnomelane Locality: Government Pit, Albany, NH Specimen Size: 1.5 mm albite crystal on stilpnomelane Field Collected: Found in large box of uncleaned, untrimmed, Government Pit specimens collected by Leroy Grant of Albany, NH (deceased). Collected in the 1970's. Catalog No.: TBC Notes: Photo with Canon T3i, Canon EF 55-255 lens plus B&L microscope objective. Helicon Focus, method B, 39 images.
TORBERNITE Keyes Mine, Orange, NH 0.3 mm cluster of torbernite crystals	Species: TORBERNITE Locality: Keyes Mine, Orange, NH Specimen Size: 0.3 mm cluster of torbernite crystals Field Collected: Found in box of uncleaned, untrimmed, Keyes Mine specimens collected by Leroy Grant of Albany, NH (deceased). Collected in the 1970's. Catalog No.: u2237 Notes: Green crystals not fluorescent. A dark blue copper mineral (bornite?) is close-by. Matrix is small, rust coated, muscovite crystals, typical of the Keyes #1 Mine. Phillip Morrill does not report torbernite from the Keyes Mines. Several groups of pale-blue, fluorescent yellow, apatite crystals are also present on this specimen. Photo with Canon T3i plus Nikon Plan 10 microscope objective. Helicon Focus, method B, 42 images. This photo is better of two attempts at this tiny cluster.
BORNITE Keyes Mine, Orange, NH 3 mm field of view	Species: BORNITE Locality: Keyes Mine, Orange, NH Specimen Size: 3 mm field of view Field Collected: Found in box of uncleaned, untrimmed, Keyes Mine specimens collected by Leroy Grant of Albany, NH (deceased). Collected in the 1970's. Catalog No.: u2237 Notes: This specimen also has several small (< 1 mm) groups of torbernite crystals. The copper for the torbernite likely came from this mineral. The deep blue color is not a tarnish, it fully permeates the mineral. A visual ID. Peter Cristofono opined: "The shape of the crystals is typical for chalcopyrite. So it might be a pseudo of bornite after chalcopyrite. Bornite is easy to distinguish from chalcopyrite by EDS. In chalcopyrite, Cu=Fe, in Bornite Cu is 5X iron." Photo with Canon T3i plus Nikon Plan 10 microscope objective. Helicon Focus, method B, 15 images.
PHOSPHURANYLITE Parker Mtn. Mine, Strafford, NH 4 cm specimen with crust of yellow phosphuranylite - not fluorescent	Species: PHOSPHURANYLITE Locality: Parker Mtn. Mine, Strafford, NH Specimen Size: 4 cm specimen with crust of yellow phosphuranylite - not fluorescent Field Collected: Gene Bearss Catalog No.: 2104 Notes: Phosphuranylite identification by similarity to analyzed Parker Mtn. specimen #2050. Bright green fluorescent autunite is also present on this specimen.
PHENAKITE Smoky quartz site, North Sugarloaf Mtn., Bethlehem, NH 2.5 mm phenakite crystal	Species: PHENAKITE Locality: Smoky quartz site, North Sugarloaf Mtn., Bethlehem, NH Specimen Size: 2.5 mm phenakite crystal Field Collected: Bob Janules Catalog No.: A Bob Janules collection specimen Notes: Photo with Canon T3i plus B&L microscope objective. Helicon Focus, method B, 39 images.
PHENAKITE Smoky quartz site, North Sugarloaf Mtn., Bethlehem, NH 3.5 mm phenakite crystal	Species: PHENAKITE Locality: Smoky quartz site, North Sugarloaf Mtn., Bethlehem, NH Specimen Size: 3.5 mm phenakite crystal Field Collected: Bob Janules Catalog No.: A Bob Janules collection specimen Notes: Photo with Canon T3i plus B&L microscope objective. Helicon Focus, method B, 31 images.
PHENAKITE Smoky quartz site, North Sugarloaf Mtn., Bethlehem, NH 1.9 mm phenakite crystal	Species: PHENAKITE Locality: Smoky quartz site, North Sugarloaf Mtn., Bethlehem, NH Specimen Size: 1.9 mm phenakite crystal Field Collected: Bob Janules Catalog No.: A Bob Janules collection specimen Notes: A tiny bit of red danalite is just visible in the top left corner of this photo. Photo with Canon T3i plus B&L microscope objective. Helicon Focus, method B, 31 images.