Hornfels is a fine-grained nonfoliated metamorphic rock with no specific composition. It is produced by contact metamorphism. Hornfels is a rock that was baked while near a heat source such as a magma chamber, sill or dike. The specimen shown above is about two inches (five centimeters) across.
Industrial Hemp Facts. Industrial hemp is a variety of Cannabis sativa and is of the same plant species as marijuana. However, hemp is genetically different and distinguished by its use and chemical makeup. Industrial hemp refers to cannabis varieties that are primarily grown as an agricultural crop.
To date, 33 states and Puerto Rico have introduced pro-hemp legislation, and 24 states have defined industrial hemp as distinct from other strains of cannabis and removed barriers to its production. In January of 2015, the Industrial Hemp Farming Act was introduced in the House and Senate, H.R. 525 and S. 134.