Fluorescent blue-glow fluorite from the collections of the Muséum is displayed during the "En Voie D'Illumination: Lumières De La Nature - On The Way...
Photograph of Fluorite , the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit,...
luxury raw purple agate crystal surface texture as a background. natural pattern surface, abstract design element of mineral stone macro closeup. - 螢石 個照片及圖片檔大自然, 藍色, 抽象
Fluorite , Stalactite , Terrestrial and Marine petrification , copperplate engraving, from L'histoire naturelle eclaircie dans une de ses parties...
Fluorite et quartz mineral is displayed during the exhibition "Earth's treasures" on December 18, 2014 in the Natural History Museum in Paris. AFP...
Fluorite from the collections of the Muséum is displayed during the "En Voie D'Illumination: Lumières De La Nature - On The Way To Illumination:...
Photograph of Fluorite , the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit,...
July 2021, Saxony, Freiberg: Christina Seifert, museum educator in the mineral collection "Terra Mineralia" of the TU Bergakademie in Freiberg, looks...
July 2021, Saxony, Freiberg: PICTURE COMBO - These four crystal specimens, smithsonite from China, pyromorphite from China and hemimorphite from...礦物質, 石英
September 2020, Saxony, Oberwiesenthal: Martin Dulig , Minister of Economics in Saxony, visits the mine Niederschlag of the Erzgebirgische Fluss- und...
Picture taken on April 9, 2010 displays red fluorite crystals shown at the Natural history Museum in Paris. The fluorite, discovered in French Alps...
Picture taken on April 9, 2010 displays red fluorite crystals shown at the Natural history Museum in Paris. The fluorite, discovered in French Alps...
Formal headshot photograph of Dr Frederick S McKay, the dentist who discovered the connection between fluoride and tooth decay which lead to modern...
