Bituminous coal Bituminous coal Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt. It is of higher quality than lignite coal but of poorer quality than anthracite. Formation is usually the result of high pressure being exerted on lignite. Its coloration can be black or sometimes dark brown; often there are well-defined bands of bright and dull material within the seams. These distinctive sequences, which are classified according to either "dull, bright-banded" or "bright, dull-banded", is how bituminous coals are stratigraphically identified. Bituminous coal is an organic sedimentary rock formed by diagenetic and
Bolton Brown Bolton Brown Bolton Coit Brown (November 27, 1864 – September 15, 1936) was an American painter, lithographer, and mountaineer. He was one of the original founders of the Byrdcliffe Colony in Woodstock, NY, part of what is now referred to as the Woodstock Art Colony. Brown was born and raised in Dresden, in upstate New York. His sister was the scientific illustrator Anna B. Nash. After receiving his Masters in Painting from Syracuse University, he moved to California in 1891 to create the Art Department at Stanford University. Brown headed the department for almost ten years, but was dismissed in