Saturday, September 25, 2010

The Lost Geologist is now a real geologist!

Yesterday was my last important day at university - my final of the four oral diploma exams! The last hurdle I had to take was an examination in palaeontology. It was one of two final exams that one may chose freely. In hindsight it was a very good decision dispite my extreme nervousness in the last days and week. I never considered palaeontology to be my strong side but there was no going back anymore. The exam lasted maybe 40 minutes and felt, surprisingly to me, quite comfortable. That is probably because it started with a questioning about reef-building organisms and corals - my favorite part of palaeontology. With that good starting feeling the rest of the exam was not easy but doable without any big problems. I have a good grade in all four final exams now and a very good average. My final average may be a bit different because I do not yet know my official grades of my diploma mapping report and my diploma thesis, yet. Anyways, all that remains is some paperwork about my official graduation and receiving my certificat (which usually takes 2 to 3 months) that allows me to carry the German academic title of Diplomgeologe. I am a real geologist now from top to bottom! Mission accomplish!

I will be taking some free days in october to visit friends. Also in the middle of october is the largest geological congress for some years in Germany. The GeoDarmstadt2010 congress. I will be attending hoping to meet some interesting people, learn a bit here and there and looking for some PhD or job opportunities for a young geologist like me. Now that my nervs calm down slowly and there are no more acute worries blogging might pick-up a little pace again, too. We will see.

Monday, September 13, 2010

Book Recommendation: Mississippi Valley-Type Deposit Model by USGS

Yesterday I recommended a USGS publication regarding Cu-Porphyries. Another of the recent USGS publications on mineral deposits is the Deposit Model for Mississippi Valley-Type Lead-Zinc Ores. Notably one of my most favorite kind of mineral deposits and that makes me quite existed to study this one more in detail. Perhaps we might see more of these thorough reports of the USGS in the future. A short summary can be found below the front cover image. To find the downloadable PDF file go HERE.
Front cover: Image source: USGS
This report is a descriptive model of Mississippi Valley-Type (MVT) lead-zinc deposits that presents their geological, mineralogical and geochemical attributes and is part of an effort by the U.S. Geological Survey Mineral Resources Program to update existing models and develop new models that will be used for an upcoming national mineral resource assessment. This deposit modeling effort by the USGS is intended to supplement previously published models for use in mineral-resource and mineral-environmental assessments. Included in this report are geological, geophysical and geochemical assessment guides to assist in mineral resource estimation. The deposit attributes, including grade and tonnage of the deposits described in this report are based on a new mineral deposits data set of all known MVT deposits in the world.

Sunday, September 12, 2010

Book Recommendation: Porphyry Copper Deposit Model by USGS

The USGS has recently posted a very thorough Scientific Investigations Report about Cu-Porphyry deposits that is available for free download as a PDF. From the first few looks that I have taken inside it is most certainly a perfect start for any student or geologists who needs to know a bit more about Porphyries than you got to hear in the 15 minutes presentation in class. I am already loving it! Go HERE to visit the website and for download. The site gives a good content description that you can find below the front cover.
Front cover. Image source: USGS
This report contains a revised descriptive model of porphyry copper deposits (PCDs), the world’s largest source (about 60 percent) and resource (about 65 percent) of copper and a major source of molybdenum, gold and silver. Despite relatively low grades (average 0.44 percent copper in 2008), PCDs have significant economic and societal impacts due to their large size (commonly hundreds of millions to billions of metric tons), long mine lives (decades), and high production rates (billions of kilograms of copper per year). The revised model describes the geotectonic setting of PCDs, and provides extensive regional- to deposit-scale descriptions and illustrations of geological, geochemical, geophysical, and geoenvironmental characteristics. Current genetic theories are reviewed and evaluated, knowledge gaps are identified, and a variety of exploration and assessment guides are presented. A summary is included for users seeking overviews of specific topics.