W-2, W-2a, W-2b Geochemical Reference Material Information Sheet

By Geology, Geophysics, and Geochemistry Science Center July 6, 2022

USGS-W-2-W-2a-and-W-2b-IS_2022-508.pdf (508.4 KB)

Detailed Description

USGS Geochemical Reference Material Information Sheet for W-2, W-2a, and W-2b (Diabase), updated June 2022.

Reference material W-2b is no longer available.

Sources/Usage

Public Domain.