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https://bereket-haileab.geology.sites.carleton.edu/files/original/3d64e63f51d9dfc6a420c7d1b41d8fe5.jpg
a3fde65d0424aa8ec2d800854193d9e9
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).
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
BH250-231a
Subject
The topic of the resource
Ankaramite
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: Hawaii, USA
Date
A point or period of time associated with an event in the lifecycle of the resource
2022
Source
A related resource from which the described resource is derived
From the rock collection of Bereket Haileab. Sample 231a. Housed at Carleton College in Minnesota.
Type
The nature or genre of the resource
Hand sample and thin section
Description
An account of the resource
<p data-start="68" data-end="162">Major Minerals: diopside, olivine, plagioclase<br data-start="118" data-end="121" />Minor Minerals: titanaugite, oxides</p>
<p data-start="164" data-end="543">Optics: Euhedral olivine, pyroxenes, and plagioclase feldspars are present. Many of the olivine and pyroxene grains are cut perpendicular to their optical axes and display beautiful interference figures. Some olivines exhibit undulose extinction, indicating deformation in the molten magma. Well-developed Carlsbad twinning is observed in olivine, pyroxenes, and plagioclase.</p>
<p data-start="545" data-end="758">Texture: Porphyritic with phenocrysts in a fine-grained groundmass; agglomerated crystal clusters and vesicular features are present. In hand sample, some phenocrysts measure up to 1.5 centimeters in diameter.</p>
<p data-start="760" data-end="1056">Hand Sample: This rock is mapped as an ankaramite, a rare, mafic to ultramafic, dark-colored volcanic rock that is notably rich in large mafic phenocrysts, particularly olivine and clinopyroxene (diopside). It is named after Ankaramy, a locality in Madagascar where it was first described.</p>
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Relation
A related resource
<iframe width="100%" height="600" style="border: 0;" src="https://carleton.maps.arcgis.com/apps/instant/media/index.html?appid=9a2aa4f8d3834eefa7c1d1b01249e3b0" 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=9a2aa4f8d3834eefa7c1d1b01249e3b0">here</a><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1KF0I5SICCeKCTSgnh_hgv7o3DJU0hmZu/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1Wcm67qrnDTynNu4YLKs1xLuLqNoAFbId/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1VPiFhzP-qC59XxMJ2FwXTgVYkB0tPMyg/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1b7Cr6nZYZfU9rv-jzvl9OzhWvNVkJ1Y-/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1_-uq3qPEYj2QrGDGsQ5kQQxVgN9r3IBN/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1S_qOPk375oT9uyv6vDxB0RWSAVjTT6wF/preview" allow="autoplay"></iframe>
Creator
An entity primarily responsible for making the resource
Bereket Haileab
Agglomerated crystals
Andalusite extinction
Ankaramite
basanite
Carlsbad twinning
Diopside
Diopside twining
Euhedral pyroxene
Glomeroporphyritic
Hawaii volcanic rocks
igneous
mafic
mafic volcanic rock
Olivine phenocrysts
Plagioclase twinning
porphyritic texture
Titanaugite
vesicular basalt
volcanic
Volcanic phenocrysts
Wavy extinction