Keywords: Hydromagnesite bubbles Jewel cave.jpg en Hydromagnesite bubbles a form of moonmilk These bubbles have wall thicknesses in the vicinity of 3 to 4 thousandths of an inch and are known only to be found in Jewel Cave es Burbujas de hidromagnesita una forma de leche de luna Estas burbujas tienen unas paredes de un grosor de 3 a 4 milmilésimas de pulgada y sólo han sido encontradas de la cueva Jewel 2007 http //www nps gov/history/history/online_books/jeca/thompson/sec3 htm NPS PD-USGov Uploaded with UploadWizard Jewel Cave National Monument Balloons speleology |