Essexite

{
  "id": "MLC-T-IND-006967",
  "term": "Essexite",
  "field": "Industrial and trades",
  "definition": "A dark-colored, silica-undersaturated intrusive igneous rock, classified as a nepheline monzogabbro or nepheline monzodiorite. It is composed primarily of plagioclase feldspar, clinopyroxene, and nepheline, with accessory minerals like biotite and amphibole. The rock type is named after its type locality in Essex County, Massachusetts, and is quarried in some locations for use as dimension stone or crushed stone.",
  "subject": "Mining and extraction",
  "translations": {
    "de": "Essexite",
    "es": "essexite",
    "fr": "essexite"
  },
  "url": "https://mlchart.com/terminology/industrial/essexite/"
}