Tuff

Specimen ID: QRX-UN0

Mineral(s)
Locality
Mindat locality:
Dimensions
28.6mm x 27.7mm x 26.4mm
weight: 23.8g
Collections
Collected by:
Previous data
Mineral(s)
Acquisition date:
6th Jul 2018
Collection date:
6th Jul 2018
Name withheld

Events

Photo added to mindat.org

Close up of layering in tuff specimen. Volcanic Tuff stained green with some blue (most likely copper), fine grained air ash fall; heat hardened. First turnout on the east side after passing Crowfoot Road turnoff, Hwy 62, Jackson County, Oregon. Hwy 62 follows the eastern edge of Lost Creek Reservoir, crossing the Rogue River twice. The volcanics here are tuff and lahar deposits that most likely predate the destruction of Mount Mazama (present-day Crater Lake); yet is probably from Mazama during its long and active building period.
Jolene Buttolph - 23rd July 2018

Photo added to mindat.org

Entire specimen of tuff. It and others like it had fallen down the cliff and were laying in the ditch. The green was surprising in all of that buff and brown.
Jolene Buttolph - 23rd July 2018

Photo added to mindat.org

First turnout on the east side after passing Crowfoot Road turnoff, Hwy 62, Jackson County, Oregon. Hwy 62 follows the eastern edge of Lost Creek Reservoir, crossing the Rogue River twice. The volcanics here are tuff and lahar deposits that most likely predate the destruction of Mount Mazama (present-day Crater Lake); yet is probably from Mazama during its long and active building period. There is a line of faint green half way up the slope and running horizontally across it where the green tuff layer is. Chunks of tuff fall down the slope and are easy to pick up and safer than attempting to climb this unstable area. Note the boulder in the foreground and the large metal bolt that protrudes from it. This cut had been anchored with dozens of these stabilizing bolts to no avail.
Jolene Buttolph - 23rd July 2018
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