Waima River, Donnellys Crossing, Kaipara District, Northland Region, New Zealand
Base 11 mm. Collection and photo Giorgio Bortolozzi.
Levyne crystals, thin, tabular and translucent, with some very tiny rounded clusters of cowlesite. Field of view: 4mm.
© Judy Rowe
Base 4 mm. Collection and photo Giorgio Bortolozzi.
Base 2 mm. Collection and photo Giorgio Bortolozzi.
A small vugh with clear glassy chabazite crystals. Field of view: 6mm.
Base 3 mm. Collection and photo Giorgio Bortolozzi.
Collection and photo Giorgio Bortolozzi.
Two balls of calcite. Inset shows a x-section of a similar ball illustrating the concentric layers of calcite with varying amounts of included Fe. 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 ...
© RJ Martin
Prisms composed of erionite fibres on balls of clay. 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.
© R. J. Martin
Small siderite (with partial alteration to hematite) at right of centre on chabazite. 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.
Small balls of hematite covering chabazite crystals. 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.
Irregular shaped vug in basaltic matrix, lined with cowlesite and tabular levyne coated with erionite.
© Volker Betz (2021)
Two layers of siderite covering phillipsite crystals. Second layer exposed at centre left and inset shows the original phillipsite crystal with both the siderite layers removed. 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 ...
Balls and tufts of thomsonite. 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.
Thin levyne crystals. 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.
Plates of levyne on tufts of cowlesite 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