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Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Pumice 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R.J.Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Cristobalite on obsidian (base 3 mm.). Collection and photo Neville Berkahn: first place in the competition for the best micro in New Zealand Micromineral Symposium (Kaiteriteri, October 2010).
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Base 3 mm. Collection and photo Giorgio Bortolozzi. (Specimen from Neville Berkahn)
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
A "bracelet" of cristobalite and feldspar on a glass strand of obsidian. 3MP Amscope with bellows and "2np" Reichert objective (approx equal to a plan 5-5.5x). Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin.
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
A mixture of cristobalite and sanidine crystals in a gas vesicle in black obsidian. A scattering of small, black, hematite crystals as well. 5MP Chinese unbranded CMOS camera with bellows and FYSCOPE 4X Semi Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph ...
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Fractured piece of grey-blue perlite (see child photo for detail). Collection and photograph of Rod Martin.
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
A mixture of cristobalite and sanidine crystals in a gas vesicle in black obsidian. A scattering of small, black, hematite crystals as well. 5MP Chinese unbranded CMOS camera with bellows and FYSCOPE 4X Semi Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph ...
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Hematite and edenite on tridymite (the bent fibres appear to be organic). 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R.J.Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Group of cristobalite crystals in a gas vesicle in black obsidian. 5MP Chinese unbranded CMOS camera with bellows and FYSCOPE 4X Semi Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin.
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Small blades of pseudobrookite on bundles of edenite crystals (along with some curved organic fibres). 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R.J.Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Detail of grey-blue perlite. 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone and PhotoScopeX. Collection and photograph of Rod Martin.
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Magnetite crystals (with a red Fe oxide coating) on striated phlogopite and quartz (RHS) and tridymite (LHS). 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
A pair of pyroxene crystals on tridymite with quartz crystals. 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Quartz crystals 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Detail of obsidian in southern road cut. Mostly scattered small pieces in scree slope but larger pieces can be extracted with care. FOV approx. 400mmm wide. Photograph of RJ Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Obsidian exposure on southern side. Tree stump at centre is approx. 500mm. Photograph of RJ Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Close up view of Northern side of roadcut which is mainly perlite and pumice but black and grey obsidian may be found there. FOV is approx. 300mm wide. Photograph of RJ Martin.
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Shot of the new excavation on the Northern side showing the vuggy , ribbon obsidian in fine pumice that is found there. Scale is about 3m vertically and the inset shows a ~90mm piece from the location.
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Northern side of roadcut which is mainly perlite and pumice but black and grey obsidian may be found there. Hole at centre is is approx. 600mm wide. Photograph of RJ Martin.
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Pumice 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R.J.Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Cristobalite on obsidian (base 3 mm.). Collection and photo Neville Berkahn: first place in the competition for the best micro in New Zealand Micromineral Symposium (Kaiteriteri, October 2010).
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Base 3 mm. Collection and photo Giorgio Bortolozzi. (Specimen from Neville Berkahn)
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Fractured piece of grey-blue perlite (see child photo for detail). Collection and photograph of Rod Martin.
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
A "bracelet" of cristobalite and feldspar on a glass strand of obsidian. 3MP Amscope with bellows and "2np" Reichert objective (approx equal to a plan 5-5.5x). Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin.
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
A mixture of cristobalite and sanidine crystals in a gas vesicle in black obsidian. A scattering of small, black, hematite crystals as well. 5MP Chinese unbranded CMOS camera with bellows and FYSCOPE 4X Semi Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph ...
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
A mixture of cristobalite and sanidine crystals in a gas vesicle in black obsidian. A scattering of small, black, hematite crystals as well. 5MP Chinese unbranded CMOS camera with bellows and FYSCOPE 4X Semi Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph ...
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Hematite and edenite on tridymite (the bent fibres appear to be organic). 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R.J.Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Group of cristobalite crystals in a gas vesicle in black obsidian. 5MP Chinese unbranded CMOS camera with bellows and FYSCOPE 4X Semi Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin.
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Magnetite crystals (with a red Fe oxide coating) on striated phlogopite and quartz (RHS) and tridymite (LHS). 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Small blades of pseudobrookite on bundles of edenite crystals (along with some curved organic fibres). 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R.J.Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Detail of grey-blue perlite. 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone and PhotoScopeX. Collection and photograph of Rod Martin.
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
A pair of pyroxene crystals on tridymite with quartz crystals. 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Quartz crystals 5MP Chinese unbranded CMOS camera with bellows and Nikon 4X Plan Achromatic Objective Lens. Processed with Zerene stacker DMap and post stacking cleanup with Faststone. Collection and photograph of Rod Martin
© R. J. Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Detail of obsidian in southern road cut. Mostly scattered small pieces in scree slope but larger pieces can be extracted with care. FOV approx. 400mmm wide. Photograph of RJ Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Obsidian exposure on southern side. Tree stump at centre is approx. 500mm. Photograph of RJ Martin
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Close up view of Northern side of roadcut which is mainly perlite and pumice but black and grey obsidian may be found there. FOV is approx. 300mm wide. Photograph of RJ Martin.
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Shot of the new excavation on the Northern side showing the vuggy , ribbon obsidian in fine pumice that is found there. Scale is about 3m vertically and the inset shows a ~90mm piece from the location.
Roadcut Section, Poihipi Road, Taupo District, Waikato Region, New Zealand
Northern side of roadcut which is mainly perlite and pumice but black and grey obsidian may be found there. Hole at centre is is approx. 600mm wide. Photograph of RJ Martin.
