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Biotite-hornblende tonalite

Site Name:
District of Columbia
Taxon:
Biotite-hornblende tonalite - Primary
Place:
100 feet west of Foundry Branch, outcrops, District of Columbia, United States, North America
Specimen Count:
1
Site Number:
4138106
Record Last Modified:
26 Oct 2017
Geological Age:
Paleozoic - Ordovician - Lower/Early
Stratigraphy:
Georgetown Intrusive Suite
Accession Number:
340885
Other Numbers:
Collector's field number : G-U-2/ 2317
IGSN : NHB006YV5
USNM Number:
117314
See more items in:
Petrology & Volcanology
Rock & Ore Collections
Locality Collection
Mineral Sciences
Data Source:
NMNH - Mineral Sciences Dept.
EDAN-URL:
edanmdm:nmnhmineralsciences_1369510

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