Geology 4 Geologist

             The True Story Behind "Fool's Gold"-Pyrite “Fool’s Gold” is technically referred to as pyrite or iron sulfide (FeS2) and is one of the maximum not unusual sulfide minerals. Sulfide minerals are a set of inorganic compounds containing sulfur and one or more elements. Minerals are defined through the manner of their chemistry and crystalline shape. Minerals which have the equal chemical composition however distinct crystal systems are known as polymorphs. Pyrite and marcasite, for instance, are polymorphs due to the fact they'll be both iron sulfide, but each has a amazing structure. Minerals also can have the identical crystalline structure however specific elemental compositions, but it’s the crystal shape that determines the mineral’s bodily traits. In addition to pyrite, commonplace sulfides are chalcopyrite (copper iron sulfide), pentlandite (nickel iron sulfide), and galena (lead sulfide). The sulfide beauty additionally consists of the selenides, the

  Earth's plate tectonics these days underwent a fundamental trade-A New Proof Sampling of a primordial mantle reservoir by mantle plume as evidenced by Ti and Sr isotopic records of the modern OIBs from the Iceland, Samoa and Caroline hotspots. Data of the OIB samples from Cape Verde and Azores in ref. 3 are shown as white circles. The N-MORB and E-MORB samples from refs. 3,4 are shown, for which the N-MORB samples without available Sr isotope data have been assumed to have 87Sr/86Sr = 0.7025. The dotted pink trajectories describe the effects from mixing in increments of 0.2% the ancient marine sediments or continental crust material with δ49Ti = +0.200‰ (refs. 5,6) and 87Sr/86Sr = 0.740 (ref. 47) into a modern depleted MORB mantle source with 87Sr/86Sr = 0.7025 (ref. 63) and δ49Ti = +0.001‰ (refs. 3,4) or into a mantle source with 87Sr/86Sr = 0.7035 and a primordial mantle δ49Ti of +0.052‰. Addition of recycled melting residues would lead to lower δ49Ti values in N-MORBs and some

  Rediscovery of Pontus: Geologists discover the remains of a long-lost tectonic plate 1/4 the size of the Pacific Ocean! In Earth’s lengthy history of over 4.5 billion years, there are numerous threads that we’re yet to entangle. One such ginormous thread has recently been undone, adding a new bankruptcy to our planet’s geological records.    Scientists have successfully exposed another lengthy-lost secret of our planet: a huge tectonic plate that becomes as soon as one-quarter the dimensions of the Pacific Ocean! Suzanna van de Lagemaat, a geologist from Utrecht University, reconstructed a huge and previously unknown tectonic plate named Pontus at the same time as exploring the planet's maximum complex plate tectonic place — the place across the Philippines. This discovery was made viable by way of piecing together fragments of antique tectonic plates, located deep in Earth's mantle, throughout the mountain levels in Japan, Borneo, the Philippines, New Guinea and New Zealan

                                              Why don’t rocks burn? While many rocks don’t burn, a number of them do. It depends on what the rocks are made from – and that’s associated with how they were shaped.   There are three important rock sorts: igneous, sedimentary and metamorphic. These rocks are products of minerals that each one has one-of-a-kind characteristics. Some will soften into magma or lava – splendid-hot, liquid rock – whilst they're uncovered to heat. Others will catch fire. Rocks can appear alike, but one rock isn't like some other.    Rocks that burn after they get heated up are combusting. This way, elements in the rocks are reacting with oxygen within the air to supply warmth and light, in the form of flames. The factors sulphur, carbon and hydrogen effortlessly react with oxygen. Rocks that contain those elements are flammable. Without those elements inside them, rocks that are exposed to sufficient heat will melt as opposed to catching fire.      

  Do rocks and minerals control our destiny? One day in October 1820 two younger men, Elijah Hamlin and Ezekiel Holmes, were trekking on a hill in Maine called Mount Mica after they spotted a glowing, inexperienced stone on the ground. They picked it up and started to search for others, but darkness turned into falling. The next day it snowed. When they in the end came back, inside the spring, they located the hill affected by such stones, on the grounds that identified it as tourmaline, a semiprecious gem prized for its range of colours. Words unfold. In 1879 a gentleman geologist and man-about-the-world named George Kunz visited. He gave some pieces to a businessman named Charles Tiffany, who hired him on the spot. One of Tiffany’s board participants changed into JP Morgan, the banker and robber baron, who started out buying tourmaline and other jewels through Kunz. Much of that series wound up inside the American Museum of Natural History.    I made the acquaintance of Morgan’s tour

                               Guide to  Mineral Exploration           One of the target of a Geologist, to find new ore deposits and to define their extent and metal content (grade).   The geologist has to ensure that the deposit is economically viable and there is a guarantee of ore production over a sufficiently long period of time.   Even after production starts. It is necessary to locate and delineate any extension to the mineralization.  Now, before dealing with exploration part, we will know about, more or less synonymous term of Exploration, which is prospecting.                                       PROSPECTING  Prospecting involves searching a district for mineral deposits with the view to mine it at a profit.  The initial signs of potentially significant mineralization are called “prospects”.  Prospects are the basic units with which exploration geologist work.  The skill of a successful prospecting involves activity, observation, knowledge, insight, persistence, thinking