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This article discusses the discovery of a new mineral called alicewilsonite-(YCe), which belongs to the mckelveyite group. The mineral is triclinic and occurs in various shapes and colors. It was first found in Canada and has also been found in Russia. The mineral is named after Alice Evelyn Wilson, a prominent Canadian geologist known for her contributions to paleontology and geology. The article provides a brief biography of Wilson, highlighting her achievements and contributions to the field. It also mentions that a tunnel-boring machine in Montreal was named after her. [Extracted from the article]

One such Chantilly specimen has white heulandite crystals to about 3 mm sparsely scattered over calcite crystals and prehnite in a prehnite-lined vug in diabase. According to Medici ([17]), the 1967 find of prehnite and apophyllite provided two types of apophyllite specimens depending on whether they crystallized within or external to the prehnite tubes. At the Vulcan Sanders quarry, white chabazite crystals to 8 mm, calcite rhombohedral crystals to 1 cm, and laumontite crystals to 1 cm were found in vuggy diabase by Al Bullock, in April 1983. In 1999 a large specimen of white, zoned apophyllite crystals on a diabase matrix was found, with individual crystals to 7.5 × 3 cm. Numerous specimens of apophyllite are known to have been collected in the south pit of the Luck Leesburg Plant during 1990-2005. The numerous trap rock quarries of northern Virginia have been a prolific source of macro- and micromineral specimens for many decades. [Extracted from the article]

The best-formed small (less than 10-mm) spinel crystals have been found in the salmon-pink calcite, whereas the best larger spinel crystals and the best corundum pseudomorphs appear to occur in gray calcite toward the center of the vein-dikes. Epitaxy of magnesiohögbomite on an octahedral face of spinel crystal overgrown by another spinel crystal from the DeWitts Corners occurrence. Due to the composite nature of the spinel crystals (see further on), magnesiohögbomite crystals can be found on faces of spinel crystals that have been overgrown by other crystals when forming larger composite spinel crystals (fig. 13). This locality, little known among mineral collectors, is a source of unusual spinel specimens, aesthetic pseudomorphs of corundum after spinel, and superb specimens of two polytypes of magnesiohögbomite. [Extracted from the article]

Takahashi et al. ([5]) successfully produced lab-grown scepter quartz using the microchannel epitaxy concept by artificially masking the prism faces of a quartz crystal with silver and leaving the apex unmasked. First, crystals tend to grow roughly perpendicular to the walls of the vein because any other orientation would put these crystals at a disadvantage in the competition with other crystals for space. All specimens pictured from the Lyndhurst area, Ontario, Canada Quartz is a common and deceptively simple mineral that keeps giving us riddles. Quartz crystals were found in hydrothermal quartz veins located in light beige to light gray quartzite (meta-sandstone) interlayered with gneiss. [Extracted from the article]

History Through the years, the Potter-Cramer mine has been referred to in books, journals, and online as either the Potter-Cramer mine, the Potter-Cramer property, or the Potter-Kramer property. The influx of late hydrothermal solutions provided the elements forming the various ore and gangue minerals at the Potter-Cramer mine, which were deposited within faults and fracture zones in a rhyolite breccia. There are currently twenty-five known minerals found at the Potter-Cramer mine (see table). In 1994, Robbins published his second book, I Fluorescence: Gems and Minerals under Ultraviolet Light i , in which he described an unknown mineral from the Potter-Cramer mine that fluoresced a cornflower-blue color. [Extracted from the article]

Heavy mineral separation reveals the presence of garnet-group minerals and magnetite as well as native gold. Magnetite crystals display the same variability in transport indicators as garnet, and there is a notable decrease in the size of individual crystals and the proportion of magnetite between samples relative to their downstream position. Crystals of smoky quartz and amazonite are present as well as a number of accessory minerals, including several beryllium mineral species. The single-crystal diffraction data of eight plutonic labradorite crystals and one metamorphic labradorite crystal show that they all have the incommensurately modulated structures, characterized by the satellite reflections ( I e i -reflections), which cannot be indexed by integer Miller indices. [Extracted from the article]

The article presents information on the Calcite vein-Dikes of the Grenville Geological Province in Ontario. Calcite vein-Dikes, which are composed primarily of calcite, have been significantly mobile at some point of their formation, due to their contact with the wall rock. The province features a number of mineral mines, including the Dwyer mines and the McLaren mines.