North and Central Americas

ncat ANK F48 Fluorite, Dolomite, Pyrite, Bluffton Stone Company Quarry, Bluffton, Richland Township, Allen Co., Ohio, USA

Purple fluorite tabular crystals (one axis is shorter than the other two) with very tiny modifications on the corners (modified by the trapezohedron). Colourless to greyish white dolomite crystals (matrix is a dolostone). Tiny pyrite crystals on fluorite. Ex Noel and Ann Kennon Collection #F48. Acquired from Pete Richards in...

ncat ANK MSH126 Rhodochrosite, Aegirine, Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Deep sharp red-brown rhombohedral crystals, one perched on aegirine crystal. There are also colourless reticulated crystals below right of centre. Maybe albite? One small area on top of rhodochrosite (not in photo) fluoresces orange. Ex Noel and Ann Kennon Collection. Ex Jean Pierre Beckerich. Width of view 11.5mm. Stack of...

ncat ANK MSH147 Calcioburbankite, Petersenite-(Ce), Siderite, Hilairite(?), Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

As with many MSH specimens, you don’t always know what you’ve got! White to tan calcioburbankite on hexagonal prismatic petersenite-(Ce). Many of the brown crystals, the lighter ones, are siderite, but some, the darker brown ones, fluoresce orange, maybe hilairite? There are tiny thin plates of an unidentified mineral that...

ncat ANK MSH71 Pectolite, Phlogopite, Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Phlogopite pseudohexagonal plates on prismatic colourless pectolite. Pectolite crystals have zoned fluorescence, pink with blue caps. Ex Noel and Ann Kennon. Ex Jean Pierre Beckerich. Width of view 5.75mm. Stack of 60 images. Comparison image width of view 11.5mm. Click on the images below for a higher resolution version. For...