Monument No. 2 Mine, Monument No. 2 channel, Yazzie Mesa, Cane Valley Mining District, Apache County, Arizona, USA

Bright canary yellow tyuyamunite replacing wood within Triassic sandstone; note the cellular texture within the powdery tyuyamunite. The mineral forms scales with a pearly luster in the center of the specimen where it is more solid. Specimen is 5.2x5.0 cm. The sandstone (Shinarump?) is muddy, poorly lithfied and contains veinlets and masses ...

width of picture 7mm

© Maurice de Graaf

Massive Rauvite, measuring 2.7 centimeters. Ex. David Shannon. Michael Cline specimen and photograph.

© Michael Cline

Width of field is 7.0 mm. Collection of Jesse Crawford. The depth of field has been enhanced using CombineZP (5 frames). Equipment: Nikon D-100 digital camera on a homemade microscope. Dark waxy-looking and highly radioactive rauvite.

© 2008 by Jesse Crawford

Crudely formed crystals, to 0.1 cm, in divergent aggregates. S052-14

© 2008, JGW, courtesy of Photographic Guide to Miner

Black sub-columnar aggregate of platy montroseite crystals, appears to be fresh and not altered to paramontroseite. Note that I originally posted this as "corvusite", a more educated visual re-examination shows the presence of distinct montroseite crystals in typical bladed striated habit. Orange is likely limonite coatings on quartz grains, ...

© 2009, JGW

Bright green blades of tangeite with yet unspecified blue mineral associating it. Specimen obtained from Sonke Stolze - thanks!

© Łukasz Kruszewski 2008

RRUFF Project Specimen ID: R060265 Locality: Monument no. 2 mine, Monument Valley, Apache County, Arizona, USA Source: Michael Scott S100247 Dark brown lathlike bladed crystals in parallel

© Rruff Project

Massive yellow becquerelite as an alteration product of black uraninite and within the sandstone (Shinarump?) pore spaces. The uraninite "eye" is 7 mm in maximum dimension. This is a fascinating rich ore specimen from the Monument No. 2 Mine, appearing to be more uranium minerals than sandstone. Fibrous areas may be replacements of plant ...

Collection and photo Stephan Wolfsried.

© Stephan Wolfsried 6/2008

dimension area mm. 2 x 2 photo and collection Luigi Chiappino

Steigerite crystals, field of view 3.5mm. Michael Cline specimen and photograph.

© Michael Cline

dimension area mm. 10 x 10 photo and collection Luigi Chiappino

dimension area mm. 2 x 2 photo and collection Luigi Chiappino

FOV 8 x 5 mm Collection and photo Roberto Bosi

© Roberto Bosi

Green translucent scales of steigerite on matrix. S415-026 N2029N

© 2008, JGW

Black fibrous crust of Montroseite overgrow small quartz pebble (now is absent) in uran-vanadian gravelite with yellow powdery Carnotite in association. Megascopically Montroseite is very similar to goethite, which is its iron analogue. The crust is binary - its outer part composed by Paramontroseite as product of alteration (drying and oxidation) ...

© Pavel M. Kartashov collection & photo

dimension area mm. 2 x 2 photo and collection Luigi Chiappino

FOV 7 x 5 mm Collection and photo Roberto Bosi

© Roberto Bosi

Black mass FOV 1 x 0.5 mm Collection and photo Roberto Bosi

© Roberto Bosi

2.8 x 1.5 x 1.3 cm

© Maggie Wilson

Yellow Steigerite crust on petrified wood matrix Locality on label: Monument N° 2, Kayenta, Navajo County, Arizona Kayenta is a town and census-designated place in Navajo County, about 25 miles (ca. 40 km) south of Monument Valley, in which the actual locality in Apache County is located Received from Willem 'Pink' Leenders on 17 ...

Purple-black Rauvite with golden-brown Fervanite, 18mm by 25mm field of view. Former Jaroslav Hyrsl collection. Rolf Luetcke specimen and photo.

photo and collection Joachim Esche modified Wild M420 photomacroscope with apozoom and Canon EOS 550D

© Joachim Esche 2015

Metatyuyamunite Doug Merson photo and collection.

© 1/2017 Douglas Merson

Tiny granular aggregate of mineralised sandstone containing black (?) uvanite. Stated as analysed by the dealer but no further details given. Purchased in 2007.

© Andrew Hodgson

Modified by CombineZP This photo consists of 39 exposures at progressive focus increments of 8.5 microns. Image depth of field is approximately 0.3 mm. Camera: Nikon D90 body on a Zeiss Standard microscope frame. Objective: Nikon Plan 10x/0.25na with an Olympus NFK 2.5x projective ocular. Purchased micromount specimen identified by seller. ...

© 2016 by Jesse Crawford

SEM image of fibrous crust of Montroseite from previous photo. More bright in BSE Montroseite (at the right side) is replaced by more dark, deconsolidated during dehydratation Paramontroseite outer layer (at the left side). Pavel M. Kartashov identification, collection and photo.

© Pavel M. Kartashov collection & photo

Clusters of yellow metatyuyamunite crystals. Photographed by and in the collection of Douglas Merson.

© 2017 Douglas Merson

I bought this from Minerals Unlimited in 2018.

Yellow steigerite crystals on a sandstone matrix. Acquired from Joy Desor. Brent Thorne specimen and photograph.

© Brent Thorne 2017

According to the label, this piece is black coffinite in coalized wood with yellow tyuyamunite, greenish vésigniéite and an unidentified blue-green mineral in the surrounding sandstone. Eric Quinter specimen U/Th 1081.

© 2024 Harold Moritz

Mitutoyo M Plan Apo 20x. Deep of field 0.20mm. 94 images stacked with Helicon Focus. FOV: 1.2mm

Mitutoyo M Plan Apo 20x. Deep of field 0.248mm. 109 images stacked with Helicon Focus. FOV: 1.2mm

Bright canary yellow mass of Tyuyamunite, with a small amount of matrix. Former collection of Dr. Eugene B. Gross, Tucson, AZ, collected circa 1955-1960, now in the personal collection of Sharon Cisneros.

© Eugene & Sharon Cisneros

Thin green crystals of vésigniéite on a matrix of claylike mudstone. Obtained from the NCMA 2022 giveaway tables, and previously in the collection of David New.

© Alex Earl 2022

Labeled as sandstone impregnated with rauvite and reportedly pascoite. Eric Quinter specimen U/Th 1049.

© 2024 Harold Moritz

Labeled as sandstone impregnated with rauvite and reportedly pascoite. Eric Quinter specimen U/Th 1050.

© 2024 Harold Moritz

Yellow tyuyamunite (as labeled) coating on sandstone. Eric Quinter specimen U/Th 0952.

© 2024 Harold Moritz

Labeled as sandstone impregnated with rauvite and reportedly pascoite. Eric Quinter specimen U/Th 1053.

© 2024 Harold Moritz

This is a micromount specimen of volborthite from the Monument No. 2 Mine, Monument No. 2 channel, Yazzie Mesa, Cane Valley Mining District, Apache County, Arizona. I acquired the specimen from Don Smoley at the 2025 Erie mineral show. This specimen was in the former collection of Robert Rothenberg (1943-2021): #00574 - 01. This specimen has ...

© Jamison K. Brizendine

Labeled as sandstone impregnated with rauvite and reportedly pascoite. Eric Quinter specimen U/Th 1051.

© 2024 Harold Moritz

Labeled as sandstone impregnated with rauvite. Former Jay Lininger reference collection. Eric Quinter specimen U/Th 1052.

© 2024 Harold Moritz