Masuyite

Bright orange Masuyite with green to brown transparent Richetite. Collection and photo: Stephan Wolfsried. Sony Alpha 7R ii, bellows, Mitutoyo M Plan 20x, aperture, Raynox DCR-250 retro, Stack-Master linear actor, stack shot control.

© Stephan Wolfsried 8/2016

Strong orange tabular masuyite crystals cluster in association with yellow acicular uranophane. SEM-EDX analysed specimen. Sony Alpha 7R IV A /Mitutoyo Plan Apo X 20 SL / Raynox DCR 150/"Stone Master Stack Unit" linear-actor & Control. Photo & Collection Christophe Boutry / november 2025.

© Christophe Boutry

Bright orange Msuyite with green to brown transparent Richetite. Collection and photo: Stephan Wolfsried. Sony Alpha 7R ii, bellows, Mitutoyo M Plan 20x, aperture, Raynox DCR-250 retro, Stack-Master linear actor, stack shot control.

© Stephan Wolfsried 8/2016

Strong orange tabular Masuyite cluster in association with yellow acicular Uranophane. SEM-EDX analysed specimen. Former Luc Vandenbergue collection, famous Belgian U-mineral collector. Sony Alpha 7R IV A /Mitutoyo Plan Apo X 20 / Achromatic doublet retro/"Stone Master Stack Unit" linear-actor & Control/ Aperture. Photo & Collection: ...

© Christophe Boutry

Bright red tabular masuyite on yellow needles of uranophane.

© Uwe Haubenreisser

Group of orange-red tabular crystals on uranophane. Canon EOS 5D Mark II, Canon macro 65 mm 1x-5x.

© Italo Campostrini

Spherical aggregates of masuyite acicular cystals up to 0.07 mm. Canon EOS 5D Mark II, bellows, Olympus Zuiko 20 mm macro.

© Italo Campostrini

Orange-caramel masuyite in yellow waxy boltwoodite and small veinlets of sklodowskite fibers in parallel growth on the right side of the specimen. Quartz infused with these yellow minerals to the left of the main vein.

© Van King

Small spherules on quartz matrix. Collection of Fulvio Iurcotta. Photo by Enrico Bonacina. OLYMPUS DIGITAL CAMERA E-30 + Rodagon 50 mm

© Enrico Bonacina

SEM-EDS & SXRD microdiffraction confirmed masuyite from the Johannes Evangelista vein, Jáchymov, CZ.

A beautiful free-standing masuyite crystal from the Paul De Bondt collection.

© Richard De Nul

© Leon Hupperichs

Collection and photo Stephan Wolfsried

© Stephan Wolfsried 6/2008

Picture width 2 mm. Collection and photo Stephan Wolfsried

© Stephan Wolfsried 6/2008

Picture width 2 mm. Collection and photo Stephan Wolfsried

© Stephan Wolfsried 6/2008

Masuyite as small orange balls and acicular crystals. Collection and photo: Giorgio Bortolozzi.

SEM image of encrustations from the cavity within massive pitchblende-galena-arsenic ore. These crystalline aggregates of Masuyite are transparent and megascopicaly dark-yellow to brownish-yellow. This picture resemble "a bird's-eye view of a city" as on picture ID: 169263 but after Godzilla's visit. :) Analytical data are available on daughter ...

© Pavel M. Kartashov collection & photo

Masuyite (orange) and Uranophane (yellow) on Uraninite. Specimen is from the collection of Bill Pinch (1972). Scale at bottom of image is an inch with a rule at one cm.

© Rock Currier

Partial plate of masuyite with a white unknown. Associated minerals, not in the phototgraph, include, gold, kamotoite-(Y), and uraninite. Brent Thorne specimen and photograph.

© Brent Thorne 2012

4.9 x 3.2 x 1.9 cm. Microcrystalline and acrystalline masuyite (TYPE LOCALITY) here occurs very richly, in unusual concentration in fact, coating sharp crystals of cubic uraninite (to about 1 cm). Overall a pretty specimen, and quite significant for the locality as well. From the prominent radioactive mineral collection of Alain Caubel, of ...

© Rob Lavinsky & irocks.com

Small yellow masses of masuyite. Collection and photo: Roberto Bosi.

© Roberto Bosi

© Leon Hupperichs

Orthorhombic crystals of masuyite with light yellow green saleeite. Associated minerals, not in the photograph, include, pyrite, sklodowskite and uraninite. Brent Thorne specimen and photograph.

© Brent Thorne 2014

Découverte par Robert Tournemire vers 1980 avant exploitation de la mine. Ex Asselborn E. Discovered by Robert Tournemire around 1980 before the start of mining operations. Ex Éric Asselborn

Bright orange massive to micro crystalline Masuyite is on matrix of solid black Uraninite, associated with lighter orange Curite and acicular Uranophane-α (Uranotile). A druse of terminated, light tan color Rutherfordine crystals is also present, deposited along the lower edge of the specimen. Personal collection of Sharon Cisneros.

© Eugene & Sharon Cisneros

Orange-red masuyite with yellow uranophane +/- sklodowskite (according to the label) and black uraninite. Eric Quinter specimen U/Th 0539.

© 2024 Harold Moritz

Orthorhombic crystals of masuyite. FOV 1.5mm. Associated minerals, not in the photograph, include, pyrite, saleeite, sklodowskite and uraninite. Brent Thorne specimen and photograph.

© Brent Thorne 2014

Yellow kamotoite and orange masuyite crusts/microcrystals on black uraninite. Identifications are according to the label, but match other photos here on mindat. Eric Quinter specimen U/Th 680.

© 2025 Harold Moritz

Orange-red masuyite or woelsendorfite (chemically tested positive for lead, but unable to further differentiate them), with other unidentified secondary uranium minerals. Eric Quinter specimen U/Th 0540.

© 2024 Harold Moritz

Group of orange-red tabular crystals up to 1.5 mm on uranophane. Canon EOS 5DS R, bellows, Olympus Zuiko 20 mm macro.

© Italo Campostrini

Massive black uraninite with red masuyite and possible yellow leppersonite-(Gd) (unconfirmed) (as labeled). Eric Quinter specimen U/Th 0054.

© 2024 Harold Moritz

Bright orange well-formed Masuyite crystals on needle-like Uranophane from Shinkolobwe.

© Uwe Haubenreisser

Strong orange tabular masuyite crystals cluster. SEM-EDX analysed specimen. Sony Alpha 7R IV A /Mitutoyo Plan Apo X 20 SL / Raynox DCR 150/"Stone Master Stack Unit" linear-actor & Control. Photo & Collection Christophe Boutry / november 2025.

© Christophe Boutry

Red masuyite with massive, orange-yellow curite. Eric Quinter specimen U/Th 0045.

© 2024 Harold Moritz

Reddish orange platy masuyite (PXRD, SCXRD, and XEDS analyzed) from the Shinkolobwe Mine, Lualaba, DR Congo. Photographed with a Nikon Z7 camera using a Mitutoyo 20x lens, iris, Raynox DCR150, extension tubes, bellows, and a StackShot rail. Composite of 156 images stacked with Helicon Focus. Chris Emproto photo. Keywords: lead, uranium, ...

© Chris Emproto

Red masuyite crystals and yellow schoepite crystals (according to the label), plus massive material on uraninite (not visible). Eric Quinter specimen U/Th 0157.

© 2024 Harold Moritz

Orange-brown masuyite with becquerelite from Shinkolobwe, Haut-Katanga, D.R.Congo.

© Knut Eldjarn

X-ray energy dispersive spectroscopy data for masuyite confirming the chemistry as a lead uranium hydroxide mineral. Chris Emproto analysis. Keywords: lead, uranium, hydroxide, hydrous, type locality, secondary.

© Chris Emproto

Fitted powder X-ray diffraction data for masuyite. The match isn't perfect because a twinned platelet was X-rayed instead of a powder, leading to high (but discordant) preferred orientation that is difficult to properly account for. I was more convinced by the retrieval of the reduced cell of masuyite from a single-crystal scan of a twinned ...

© Chris Emproto