https://bereket-haileab.geology.sites.carleton.edu/files/original/0786e111d16117a6ab481111dfe5b0f8.jpg 9f0ac6ab0f0b0852fcd3a8bf08b0a0e6 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 Igneous Rocks Subject The topic of the resource This collection covers both volcanic and intrusive rocks, including rhyolites, granites, diorites, andesites, basalts, gabbros, diabases, pumices, obsidians, syenites, phonolites, peridotites, carbonatites, dacites, trachyte, dunites, xenoliths, ignimbrites, and pegmatites. 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 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 BH250-116 Subject The topic of the resource Rhyolite 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: Northern Minnesota, Minnesota, USA Found near Split Rock Lighthouse Source A related resource from which the described resource is derived From the rock collection of Bereket Haileab. Sample 116. Housed at Carleton College in Minnesota. Type The nature or genre of the resource Thin section Relation A related resource <iframe width="100%" height="480" src="https://drive.google.com/file/d/18iHhGFtZU0APqRl9mXZi8_XliCWiR3S2/preview" allow="autoplay"></iframe> Creator An entity primarily responsible for making the resource Bereket Haileab Description An account of the resource BH250-116 – Rhyolite from Lighthouse Point, North Shore Area This specimen is a rhyolite collected from Lighthouse Point along Minnesota’s North Shore. The rock preserves vesicular textures formed by trapped volcanic gases during solidification. These vesicles are now filled with secondary minerals, likely including quartz, calcite, or zeolites, deposited from hydrothermal fluids or low-temperature alteration after emplacement. The fine-grained groundmass and silica-rich composition reflect its origin from high-viscosity felsic lava, characteristic of explosive volcanic environments. felsic igneous rhyolite volcanic