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Tonopah, NV: Calcite Andesite - tuffaceous

Dates

Dataset Reference Date
2020-07-01
Info Date
1929

Summary

Index No: MRTN102350; Collected By: Thomas B. Nolan; Sample Type: hand sample; thin section; Notes: Location taken from Ohio Tonopah Mine shaft; Fine-grained, green clastic rock with a dense green matrix containing small to large white, angular feldspars. The variation in size and amount gives the rock a banded appearance. The widest bnads contain the finer material and are up to 5 cm wide. The coarser bands may be as small as 1 cm wide. The groundmass is chiefly small sericite shreds with flakes of altered biotite and angular quartz fragments. Apatite and zircon are present, but feldspar phenocrysts, if present, have been practically all torn out. This rock looks much more like a member of the tuff series rather than CA. Rutile is [...]

Attached Files

Map

Communities

  • National Digital Catalog

Tags

Provenance

Data source
File Processing
File Process
Type
NGGDPP
Reference Item
Nevada Bureau of Mines and Geology Sample Collection Database
Reference File
corescuttings_nggdpp_2020.csv

Additional Information

Alternate Titles

  • MRTN102350

Identifiers

Type Scheme Key
title Parent-5494ba35e4b0a2b9adad8ee3 Tonopah, NV: Calcite Andesite - tuffaceous

NGGDPP Item Extension

alternateGeometryTonopah

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