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Photos recently added to NH species galleries, set #77. |
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Species: STRENGITE Locality: Fletcher Mine, N. Groton, NH Specimen Size: 4 mm field of view. Lavender strengite balls with black rockbridgeite on yellow unknown crystalline matrix. Field Collected: Clayton Ford, 1960's. Acquired by Gordon Jackson 9/22/03. Gifted to T. Mortimer 3/19/16. Catalog No.: u1957 Notes: Analytically, even quantitative EDS cannot differentiate stengite from phosphosiderite. Both have one P, one Fe, and two waters. The only difference is a difference in the Fe oxidation state. Granted strengite is orthorhombic and phosphosiderite is monoclinic, but with a ball form, there is nothing to go by. On mindat.org, there are 216 strengite photos and 829 phosphosiderite photos, (Mar. 2016). About a third of each of these are ball form and both species have photos of pale violet and pale blue balls. I think the New England collecting community has a preference for naming the violet balls as strengite. And then we also have koninckite, that has essentially the same chemistry, but one less water and also forms pale pink balls. |
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Species: SIDERITE Locality: Palermo Mine, N. Groton, NH Specimen Size: 0.6 mm red-brown siderite rhomb on manganese oxide coated earier generation of siderite Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore Catalog No.: u1942 Notes: A nice, isolated, siderite crystal. Siderite is very common at Palermo, but isolated, photogenic, crystals are uncommon. |
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Species: STRUNZITE Locality: Palermo Mine, N. Groton, NH Specimen Size: 3 mm field of view, (zoom view 2 mm fov) Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore Catalog No.: u1019 Notes: A stack of 27 images processed with Helicon Focus. |
Species: STRUNZITE Locality: Palermo Mine, N. Groton, NH Specimen Size: 3.5 mm field of view Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore Catalog No.: u1607 Notes: A stack of 37 images processed with Helicon Focus. |
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Species: ANATASE Locality: Pike Quarry, Hooksett, NH Specimen Size: 0.5 mm anatase crystal on quartz crystals Field Collected: Tom Mortimer Catalog No.: u1751 Notes: A stack of 9 images processed with Helicon Focus. |
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Species: JAHNSITE Locality: Palermo Mine, N. Groton, NH Specimen Size: 0.4 mm jahnsite crystal Field Collected: From a tub of Palermo phosphate rocks gifted by Bob Whitmore Catalog No.: u1929 Notes: A stack of 7 images processed with Helicon Focus. |
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Species: AURICHALCITE Locality: Mascot Mine, Gorham, NH Specimen Size: 1.8 mm field of view Field Collected: Bob Janules Catalog No.: A Bob Janules specimen Notes: A stack of 16 images processed with Helicon Focus. |
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Species: LEUCOPHOSPHITE Locality: Palermo Mine, N. Groton, NH Specimen Size: 0.4 mm crystal group. Field Collected: From a box of Walter Lane Palermo "rocks" on MMNE give-a-way table Catalog No.: u1205 Notes: A stack of 23 images processed with Helicon Focus. |
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Species: HEMIMORPHITE Locality: Madison Lead Mine, Madison, NH Specimen Size: 1.0 mm cluster of hemimorphite crystals Field Collected: Tom Mortimer Catalog No.: u513 Notes: A stack of 31 images processed with Helicon Focus. |
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Species: XENOTIME Locality: N. Sugarloaf Mtn., Bethlehem, NH Specimen Size: 0.4 mm xenotime crystal Field Collected: Tom Mortimer Catalog No.: u570 Notes: A stack of 23 images processed with Helicon Focus. This small crystal gave its life to science. When I went to put it back into its micro box, the crystal had fallen off. |