WikiVisually
Infinite photos and videos for every Wiki article · Find something interesting to watch in seconds
Wars and Battles Presidents Celebrities Countries of the World Tallest Buildings Recovered Treasures Largest Empires Richest US Counties Orders and Medals Largest Palaces Best Campuses Animals History by Country Crown Jewels Rare Coins Great Cities Great Museums Famous Castles Sports World Banknotes Great Artists Supercars British Monarchs Ancient Marvels Kings of France Wonders of Nature
more top lists
History
Afwillite
Videos
Page
Afwillite is a calcium hydroxide nesosilicate mineral with formula Ca3(SiO3OH)2·2H2O. It occurs as glassy, colorless to white prismatic monoclinic crystals. Its Mohs scale hardness is between 3 and 4. It occurs as an alteration mineral in contact metamorphism of limestone. It occurs in association with apophyllite, natrolite, thaumasite, merwinite, spurrite, gehlenite, ettringite, portlandite, hillebrandite, foshagite, brucite and calcite.
Afwillite from Crestmore Quarry, Riverside County, California
Afwillite from Crestmore Quarry, Riverside County, California
Thaumasite
Videos
Page
Thaumasite is a calcium silicate mineral, containing Si atoms in unusual octahedral configuration, with chemical formula Ca3Si(OH)6(CO3)(SO4)·12H2O, also sometimes more simply written as CaSiO3·CaCO3·CaSO4·15H2O.
Thaumasite (white) with prehnite (green) from Fairfax Quarry, Virginia
Thaumasite (white) with prehnite (green) from Fairfax Quarry, Virginia
Group of thaumasite prisms from the Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa (size: 4.2 × 3.1 × 1.2 cm)
Group of thaumasite prisms from the Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa (size: 4.2 × 3.1 × 1.2 cm)