Essexite
id:
essexite-318-7301217
title:
Essexite
text:
Essexite, also called nepheline monzogabbro, is a dark gray or black holocrystalline plutonic igneous rock. Its name is derived from the type locality in Essex County, Massachusetts, in the United States. Modern petrology identifies rocks according to mineralogical criteria. Utilising the IUGS QAPF diagram of Streckeisen (1974) "essexite" is more formally known as nepheline monzodiorite or nepheline monzogabbro depending on the ratio of orthoclase to plagioclase and the abundance of nepheline.
brand slug:
wiki
category slug:
encyclopedia
description:
Igneous rock type
original url:
https://en.wikipedia.org/wiki/Essexite
date created:
date modified:
2023-12-08T14:16:41Z
main entity:
{"identifier":"Q955702","url":"https://www.wikidata.org/entity/Q955702"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/2/24/Craigleith_-_geograph.org.uk_-_181324.jpg","width":640,"height":416}
fields total:
13
integrity:
15