Tuff-breccia: Mineral information, data and localities.

A pyroclastic-rock where there is at least 25% of each of the main fragment size divisions (i.e. block/bomb, lapilli and ash.)

File:Volcanic breccia (Upper Oligocene, 25 Ma; Narbona Pass Maar Volcano, near the summit of the Chuska Mountains, Navajo Volcanic Field, New Mexico, USA) 19.jpg - Wikimedia Commons

Rocks 2.3

Breccia Rock Type, Composition, Formation, Types & Uses

Quartz – WGNHS – UW–Madison

Oil Inclusions Found in Skeleton Crystals of Quartz Indicated the Existence of Organic Matter Surrounding Ancient Growth Environments

Breccia: Mineral information, data and localities.

Breccia, Crystalline, In Rock - Rocks & Minerals - Earth & Space Science

Mineralatlas Lexikon - tuff-breccia (english Version)

Characteristics of tuff breccia-andesite in diverse mechanisms of landslides in Oita Prefecture, Kyushu, Japan, Geoenvironmental Disasters

Tuff - Igneous Rocks

USGS: Geological Survey Professional Paper 754—C (The Portage Lake Volcanics on Isle Royale)