Scolecite is a tectosilicate mineral belonging to the zeolite group; it is a hydrated calcium silicate. Scolecite, like natrolite and mesolite, usually occurs as acicular (needle-like) and fibrous aggregations. It has nearly the same angles between the crystal faces as does natrolite, but natrolite is orthorhombic and scolecite is monoclinic.
The Comet moth (Argema mittrei) or Madagascan moon moth is an African moth, native to the rain forests of Madagascar. The male has a wingspan of twenty centimeters and a tail span of fifteen centimeters, making it one of the world's largest silk moths. The female lays from 120-170 eggs, and after hatching the larvae feed on Eugenia and Weinmannia leaves for approximately two months before pupating.
Mount St. Helens is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. It is 96 miles south of Seattle, Washington and 50 miles northeast of Portland, Oregon. The volcano is located in the Cascade Range and is part of the Cascade Volcanic Arc, a segment of the Pacific Ring of Fire that includes over 160 active volcanoes. This volcano is well known for its ash explosions and pyroclastic flows.
