Microcline gallery

MICROCLINE Gallery Return to Microcline page. Click on image for larger view
Nice microcline crystals are commonly found in Conway granite miarolitic cavities and less frequently in pegmatite bodies.
MICROCLINE Boulder field locality, N. Sugarloaf Mtn., Bethlehem, NH 8 cm crystal.	Species: MICROCLINE Locality: Boulder field locality, N. Sugarloaf Mtn., Bethlehem, NH Specimen Size: 8 cm crystal. Field Collected: Tom Mortimer Catalog No.: 419 Notes: This microcline crystal has a thin tan limonite coating.
MICROCLINE Folsom Brook locality, Ossipee, NH 7 cm specimen with Miller index face labels.	Species: MICROCLINE Locality: Folsom Brook locality, Ossipee, NH Specimen Size: 7 cm specimen with Miller index face labels. Field Collected: Tom Mortimer Catalog No.: 399 Notes: Markers with crystal face indicies have been applied to this specimen, (hopefully correctly!). Large microcline crystals are good subjects for face index studies.
MICROCLINE Boulder field locality, N. Sugarloaf Mtn., Bethlehem, NH 3.5 cm crystal with Miller index face labels.	Species: MICROCLINE Locality: Boulder field locality, N. Sugarloaf Mtn., Bethlehem, NH Specimen Size: 3.5 cm crystal with Miller index face labels. Field Collected: Tom Mortimer Catalog No.: 422 Notes: Markers with crystal face indicies have been applied to this specimen, (hopefully correctly!).
MICROCLINE Government Pit, Albany, NH 6 cm specimen.	Species: MICROCLINE Locality: Government Pit, Albany, NH Specimen Size: 6 cm specimen. Field Collected: Tom Mortimer Catalog No.: 616 Notes: These microcline crystals have a thin tan limonite coating with a few black pyrolusite dendrites.
MICROCLINE Bald Mtn. Ossipee, NH 3.6 cm Baveno twin microcline crystal.	Species: MICROCLINE Locality: Bald Mtn. Ossipee, NH Specimen Size: 3.6 cm Baveno twin microcline crystal. Field Collected: Bob Janules Catalog No.: 885 Notes:
MICROCLINE Knox Mtn. Ossipee, NH 3 cm specimen with prominent Baveno twin crystal and small smoky quartz crystals.	Species: MICROCLINE Locality: Knox Mtn. Ossipee, NH Specimen Size: 3 cm specimen with prominent Baveno twin crystal and small smoky quartz crystals. Field Collected: Tom Mortimer Catalog No.: 694 Notes:
MICROCLINE Folsom Brook locality, Ossipee, NH 4 cm crystal group with thin glassy albite over-growth. MICROCLINE Folsom Brook locality, Ossipee, NH 4 cm crystal group another view	Species: MICROCLINE Locality: Folsom Brook locality, Ossipee, NH Specimen Size: 4 cm crystal group with thin glassy albite over-growth, two views Field Collected: Tom Mortimer Catalog No.: 607 Notes:
MICROCLINE Folsom Brook locality, Ossipee, NH 4.7 cm crystal group.	Species: MICROCLINE Locality: Folsom Brook locality, Ossipee, NH Specimen Size: 4.7 cm crystal group. Field Collected: Tom Mortimer Catalog No.: 403 Notes:
MICROCLINE Classic "Smoky quartz area", Moat Mtn. Albany, NH 9 cm specimen.	Species: MICROCLINE Locality: Classic "Smoky quartz area", Moat Mtn. Albany, NH Specimen Size: 9 cm specimen. Field Collected: Tom Mortimer Catalog No.: 101 Notes:
MICROCLINE - (perthitic) Wheeler Mtn., Winchester, NH 12 cm single microcline crystal.	Species: MICROCLINE -(perthitic) Locality: Wheeler Mtn., Winchester, NH Specimen Size: 12 cm single microcline crystal. Field Collected: Tom Mortimer Catalog No.: 1281 Notes: From a contact metamorphic environment. A XRD analysis indicates a mix 65% microcline, 35% albite, Ca rich. I considered sanidine.... but a follow-up correlation of the XRD data with sanidine was not very good. Typical perthite lamina on this crystal are visible under my stereo scope... with the lighting just right, but only on the broken backside, not on crystal faces. Photos of nice euhedral perthite crystals (e.g on mindat) are rare.
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