Pseudohexagonal white plates of tridymite with black balls of hematite(?). Branching stalactitic groups of stacked crystals may also be tridymite. Collected by Mike Reinke on open land near to ToR. Width of view 6.5mm. Stack...
Colourless bladed stellate tridymite, orange titanite(?) and grey-green “pyrobole”, an unidentified pyroxene or amphibole. Collected from a boulder on the ridge above Animas Creek by Mike Reinke. Width of view 4.9mm and a stack of...
Acquired by Joan Lamond in 1995 from Judy Rowe.
Pale greenish rounded pseudohexagonal twins of tridymite with goethite(?). Oxidation due to the breakdown of either ilmenite or magnetite. You can see the hexagonal outline of the tridymite here and there.
Unusual striping. Epiaxial growth? Ex John Sobolewski, Matt Gibbs
ex Joan Lamond Collection
Hendersons Quarry, Mount Ngongotaha, Rotorua District, Bay of Plenty Region (Te Moana-a-Toi), North Island, New Zealand Photo width 11mm View Larger Map | Get Directions
Prismatic and acicular topaz crystals, with opal coating tridymite, and also capping one of the topaz crystals, from the Conca Cannas quarry, Masullas, Mt. Arci, Oristano Province, Sardinia, Italy.
