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Photos recently added to NH species galleries, set #42. |
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Species: ANTHOPHYLLITE Locality: Canterbury Soapstone Quarry, Canterbury, NH Specimen Size: 4 cm specimen with banded seam of bladed, bronze-colored anthophyllite crystals, two views. Field Collected: Tom Mortimer - 2012 Catalog No.: Notes: Dianne R. Nielson's Dartmouth College Doctorate Thesis Metamorphic Diffusion in New Hampshire Soapstone Bodies and Flecky Gneisses, 1974, notes the presence of anthophyllite veins occurring within the talc body at Canterbury, NH. A qualitative EDS analysis indicated my samples collected in 2012 were the anthophyllite referenced in Nielson's thesis. |
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Species: ANTHOPHYLLITE Locality: Canterbury Soapstone Quarry, Canterbury, NH Specimen Size: 4 cm specimen with banded seam (in talc) of bladed, fresh-unweathered, anthophyllite crystals. Field Collected: Tom Mortimer - 2012 Catalog No.: Notes: |
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Species: MALACHITE Locality: Pierce Mine, Chesterfield, NH Specimen Size: 7 mm "tree" of malachite crystals. Field Collected: Tom Mortimer - 1998 Catalog No.: 1094 Notes: |
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Species: AUTUNITE Locality: Palermo #1 Mine, N. Groton, NH Specimen Size: 1.5 cm field of view Field Collected: Tom Mortimer Catalog No.: 214 Notes: A zoom view of specimen 214 (the NH display case specimen), autunite on smoky quartz. |
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Species: ORTHOCLASE var Adularia Locality: Rt. 101 - 101A road cut, Amherst, NH Specimen Size: 8 mm field of view. Adularia (pink) with epidote (green), babingtonite (black) and prehnite (white fan) Field Collected: Tom Mortimer Catalog No.: u320 Notes: |
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Species: SIDERITE Locality: Folsom Brook Locale ('the gulch"), Ossipee, NH Specimen Size: 2.8 cm specimen Field Collected: Tom Mortimer Catalog No.: 398 Notes: |
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Species: PYRITE Locality: Rt. 110 road cut, Dummer, NH Specimen Size: 4 mm octahedral pyrite crystal on post Field Collected: Tom Mortimer Catalog No.: p/o 872 Notes: 10 image stack processed with Helicon Focus |
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Species: QUARTZ Locality: Table Mtn., Albany, NH Specimen Size: 4.8 cm zoned crystal Field Collected: Tom Mortimer Catalog No.: NC Notes: |
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Species: ARFVEDSONITE ? Locality: Hurricane Mtn., Conway, NH Specimen Size: 12 mm field of view Field Collected: Tom Mortimer Catalog No.: 576 Notes: I have wondered for many years if these black hair specimens (I collected many) are arfvedsonite, riebeckite, or perhaps aegirine. All are possibilities from the Hurricane Mtn. locality. A qualitative EDS analysis did not resolve the ambiguity (the sodium response of EDS detector is low and not indicative of the true sodium proportion). Both arfvedsonite and riebeckite have a Fe:Si ratio of 5:8. Aegrine is lower, 4:8 (1:2). The plot appears to support a 5:8 ratio. For the present I will file this with the arfvedsonite gallery. A 16 image stack processed with Helicon Focus. |
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Species: KAOLINITE ? with Zircon Locality: Red Hill, near Horne Quarry, Moultonborough, NH Specimen Size: 3 mm field of view Field Collected: Tom Mortimer Catalog No.: NC Notes: Kaolinite ? pale-orange, with zircon (glassy tan), hastingsite (black), titanite (small yellow - upper left-center), and feldspar (white). I have been searching for several species reported from the Red Hill nepheline-syenite for several years: wholerite, rosenbushite, and cancrinite. I am not aware of any Red Hill examples of these species for comparison. I have analysis done when I spot things outside my previous observations. This pale orange material analyzed to be a simple aluminum silicate, ( EDS analysis plot). It is quite soft, hardness 4 or less. Kaolinite (and polymorphs) and allophane fit this chemistry and hardness. Given the abundance of feldspar present, kaolinite would be more likely. However, for allophane, the Al:Si ratio is 2:1 where-as for kaolinite the ratio is 2:2, so the EDS plot would seem to favor allophane. For the present I will file this in the kaolinite gallery. |