Simple Lithology

silicate mudstone

http://resource.geosciml.org/classifier/cgi/lithology/silicate_mudstone

definition Mudstone that contains less than 10 percent carbonate minerals. more like this
note Operational distinction of this category will typically be based on whether or not the rock fizzes when hydrochloric acid is applied--the rock is silicate mudstone if it does not fizz. The quantitative '10 percent' criteria is fuzzy. more like this
source This vocabulary more like this
type
Resource
Concept
broader generic mudstone
narrower silicate mudstone
in scheme simplelithology
is primary topic of silicate mudstone