https://bereket-haileab.geology.sites.carleton.edu/files/original/f1c88a3714e1d792f9b99fa5f0c35fee.jpg a68e888166d17e95331c42eca97242e1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Metamorphic Rocks Subject The topic of the resource This collection includes slates, phyllites, schists, gneisses, eclogites, marbles, quartzites, skarns, granulites, and mylonites. Creator An entity primarily responsible for making the resource Bereket Haileab Source A related resource from which the described resource is derived Housed in Anderson Hall, Carleton College. Format The file format, physical medium, or dimensions of the resource Thin sections, thin section scans, hand samples, hand sample images, photomicrographs, chemical analyses (major elements, trace elements and REE analyses for selected samples). Thin section and hand sample Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource BH250-183 Subject The topic of the resource Quartzite Description An account of the resource Major Minerals: quartz<br />Minor Minerals: muscovite, chlorite<br /><br /> <p>BH250-183 was collected during an Alumina field trip to Tanzania. The sample lies near the western margin of the Archean–Proterozoic Tanzanian Craton, which hosts ancient metamorphic basement rocks.</p> <p>Textures include, recrystallized quartz grains with subgrain boundaries and irregular grain-shape mosaics with crystalloblastic, foliated fabric — microscopic evidence of intense deformation (SpringerLink). In some areas, quartz grains can be coarse, reaching 1–2 cm in diameter.</p> <p>It is a metamorphic quartzite or vein quartz formed during Pan-African orogenic events, characterized by very high quartz purity, deformation and recrystallization textures, and typical granulite-facies remodeling features.</p> <p>Muscovite grains are aligned in a foliation throughout the thin sections. Muscovite in metamorphosed quartzite commonly forms from the metamorphism of clays (kaolinite, illite) originally present in the sandstone’s cement or matrix. This suggests that clay mineral cements were present before metamorphism, acting as a binding material between quartz grains, and transformed during burial to amphibolite facies conditions.</p> <br /><iframe width="1800" height="100" src="https://docs.google.com/spreadsheets/d/e/2PACX-1vS4nyqCmZQGn3t6vX4g4nhDPwHMBaKrigt1LaY2pykWbBGXB1wNb6FYArx625I-JTtD7lyg4uz1OS1r/pubhtml?gid=564705675&amp;single=true&amp;widget=true&amp;headers=false"></iframe> <iframe height="100" wideth="" 100="" src="https://drive.google.com/file/d/1Fw1uIiEuu6IAqOXtv-6Bb8W1cRpJjKBI/preview" allow="autoplay"></iframe> Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Location: Buffalo Luxury Camp, Ololosokwan, Tanzania GPS Coordinates: 1°51'51"S, 35°16'42"E Source A related resource from which the described resource is derived From the rock collection of Bereket Haileab. Sample BH250-183. Housed at Carleton College in Minnesota. Type The nature or genre of the resource Hand sample and thin section Relation A related resource <iframe width="100%" height="600" style="border: 0;" src="https://carleton.maps.arcgis.com/apps/instant/media/index.html?appid=d097851fb7f1475fac51fc6ce5101a32" frameborder="0" allowfullscreen="allowfullscreen">iFrames are not supported on this page.</iframe><br />View on ArcGIS Online <a href="https://carleton.maps.arcgis.com/home/item.html?id=d097851fb7f1475fac51fc6ce5101a32">here</a><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/14kvvDPhiX14JeMtIipLk_6TrzfHHZDmz/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1wC3obEKiyGcc4hI6nIYxYegsT62Ewm8x/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1CnfV4orKoXQxcFb9P_KBpngmO3OiQb4R/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1-z38BapMB1usD2oH64sNeHVNC_yCQapx/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1I2510aL5NBEzyIYVw1cTvDEh81Uj0kgu/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1dy9MAzMARQpZyrMsfiaf91urHEZ-segm/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1Y-vnwZ-j0gKZMib_6wKsI9M5euYG4O1l/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1xO2c5epsiilj0Ywbb6x0YnA3IYoohvUL/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/14PQlSnkWYEXM3ZGB_1fadqTiHYTr0n3v/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1NYvxBvOAw0LQH55J5DNU6NfBcf6mWM_d/preview" allow="autoplay"></iframe> Creator An entity primarily responsible for making the resource Bereket Haileab Archean-Proterozoic Basement Buffalo Luxury Camp Clay-derived Cement granulite facies high-grade metamorphism metamorphic Metamorphic Foliation metasedimentary muscovite Ololosokwan Pan-African Orogeny quartzite Recrystallized Quartz Tanzania Tanzanian Craton