Magnetite-apatite (MtAp) deposits and related rocks in the Adirondack Mountains, New York State


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Magnetite-apatite (MtAp) deposits and related rocks in the Adirondack Mountains, New York State

John M. Hanchar (Memorial University) et al.

Leaders and affiliations : John M. Hanchar (Memorial University), Marian Lupulescu (New York State Museum), Jeff Chiarenzelli (St. Lawrence University)

Contact : [email protected]

Description :  Field trip to the Adirondack Mountains, in New York State, to explore the regional geology and to visit several spectacular exposures of magnetite-apatite (MtAp) deposits and their hydrothermally altered host rocks.

The trip will be for three days and will be based out of Ticonderoga, New York. Participants are asked to arrive in Ticonderoga, New York, the night of the 16th of May. The field trip is expected to end mid-afternoon on the 19th. (N.B., fieldtrip will start and end from Ticonderoga, NY; transportation from Quebec City and custom procedures are the responsibility of each participant).

Here is the itinerary.

Day 1. May 17th, 2019

    • Stop 1: Woolen Mills – Classic outcrop of Adirondack Grenville geology and introduction to the field trip.
    • Stop 2: Barton Hill Mine (Mineville) – Famous historic MtAp deposit.
    • Stop 3: Cheever Mine – Another style of MtAp mineralization.

Day 2. May 18th, 2019

  • Stop 1: Dannemora – classic K-altered MtAp host rock, Lyon Mountain granite.
  • Stop 2: Clintonville – along Ausable River to see slag and nice place to stop for a few minutes where once was a mining town where several thousand people lived.
  • Stop 3: Palmer Hill Mine – Historic strata-bound Lyon Mountain granite hosted MtAp deposit.
  • Stop 4: Rutgers Mine – Thought to be one of the oldest of the MtAp deposits and certainly the most complex to study, Lyon Mountain granite hosted MtAp deposit.

Day 3. May 19th, 2019

  • Stop 1: Scofield Mine (Skiff Mountain) – Strata-bound MtAp deposit with Na altered host rock.
  • Stop 2: Marble outcrop (with graphite, garnet, and diopside) along Hudson River north of Warrensburg, New York, on Rte. 28.
  • Stop 3: Barton Mines – historic Gore Mountain garnet deposit.

Number of participants (Min/Max) : to be determined

Duration : 3 days

Date : Post-congress