t’s easy to pass by rocks and minerals while you are walking around but you never know what is lurking on the inside. Out in nature, the outside of most rocks and minerals look drab and dingy because of rain, wind, ice and snow that will wear away sharp points, dull the vibrant colors and cause cracks in the surface of the samples.
Carnelian is one mineral in particular which looks rather boring on the outside because of this weathering when you break it open to see a fresh surface, you can see vibrant orange colors and sometimes, a hidden surprise.
Filed under: Geology / Earth Science, Minerals on September 13th, 2016 | No Comments »
Ah, the weather. Rain, wind, snow, ice, heat and cold all affect the nature and appearance of the Earth’s exposed rocks. Rocks and minerals that are out in the open over time will change the way they look due to the weather. The heat and cold will make the rocks expand and contract which can cause cracking and flaking.
Filed under: Geology / Earth Science, Rocks on June 30th, 2014 | No Comments »
very day, rocks are subjected to wind, rain and other mechanical processes that cause them to breakdown into smaller pieces and different forms. This process of weathering is part of the rock cycle and causes sedimentary, igneous and metamorphic rocks to break down into smaller sediments and soil-sized particles. You can learn a about rock weathering right in your own kitchen! Try this fun experiment to learn more about the mechanical weathering of rocks and post your results in the comments below.
Filed under: Education, Rocks on May 19th, 2014 | 1 Comment »
Today’s Ask-A-Geologist question is about rock weathering. Weathering can cause subtle or dramatic changes in the appearance of a rock.
Filed under: Geology / Earth Science, Rocks on September 26th, 2013 | No Comments »