Greenish tinted crystals of marcasite with fluorescent sphalerite. Width of view 14mm. Stack of 50 images. Click on the image below for a higher resolution version.
Type Locality. Grains of black cadmoselite with orange-brown sphalerite, and silvery metallic clausthalite? Width of view 6mm. Stack of 36 images. Ex Excalibur Minerals. Click on the image below for a higher resolution version.
Three pieces. Photo shows red-violet hardystonite(?), orange-red sphalerite, greenish-yellow smithsonite(?) and unknown bluish-white mineral. Longwave ultraviolet light. Width of view 2.5mm. Stack of 22 images. Click on the image for a higher resolution version.
Twinned harmotome, including “drill bit” habit. Width of view 2.5mm. Stack of 25 images. Click on the image below for a higher resolution version.
A classic and really cute example of epitaxy. Chalcopyrite epitaxial on a sphalerite crystal. And to add to the cuteness, there are some tiny tetrahedrite crystals bottom left of photo. Width of view 6mm. Stack of 28 images. Click on the image below for a higher resolution version.
A nice group of bournonite crystals perched on brassy arsenopyrite and dark sphalerite crystals. Quartz crystals on specimen but not in photo. Height of view 5mm. Stack of 48 images. Click on the image below for a higher resolution version.
Green partial coating on sphalerite crystals on dolomite. Width of view 9mm. Stack of 40 images. Off white fluorescence under longwave ultraviolet may be calcite partially coating dolomite. Click on the image below for a higher resolution version.
Greenockite as a yellow coating/exsolution on sphalerite crystals. Some tiny orange crystals of greenockite evident particularly in the bottom left-hand quadrant (zoom in to explore). Width of view 7.75mm. Stack of 40 images. Click on the image below for a higher resolution version.
A mass of silver needles of franckeite with black sphalerite, purple fluorite, tan magnesite, and not in photo, pyrite. Width of view 17.25mm. Stack of 50 images. Click on the image below for a higher resolution version.
A small ore specimen comprising purple fluorite (fluorescent), chalcopyrite, and small amounts of galena and sphalerite. Specimen measures 22x20x20mm. Stack of 50 images. Click on the image below for a higher resolution version.
This is the first time I have seen this colour on a Broken Hill specimen! Spectacular under shortwave ultraviolet light. The smithsonite glows yellow under longwave, pink under medium wave and violet red under shortwave. Sphalerite is visible orange under shortwave and brighter under medium wave. It also appears to...
Parallel aggregates of grey, partly tarnished crystals with white kaolinite. Ex Mal Annells Collection #1424. Width of view 8.63mm. Stack of 99 images. Click on the image below for a higher resolution version.
A sharp metallic black tetrahedral sphalerite crystal on white albite. Ex Noel and Ann Kennon Collection. Ex Jean Pierre Beckerich. Width of view 11.5mm. Stack of 109 images. Click on the image below for a higher resolution version.
Not a great specimen, but colourless crystals of phosphophyllite present, some showing indications of twinning, with brown sphalerite. Width of view 3.5mm. Stack of 20 images. Click on the image below for a higher resolution version.
Type Locality. Polished section & analysis of this very rare lead-iron analogue of pentlandite, from the type locality, present as typical submicroscopic grains embedded in massive sulphides. Ex Raymond Hodgson Collection (4272) obtained in 2007. Includes shadlunite, chalcopyrite, pentlandite, cubanite, magnetite, galena, sphalerite, and silver.
Zoned yellow and brown sphalerite crystals with colourless rhombs of dolomite and colourless round groups of quartz crystals. A couple of very pale yellow sphalerite crystals exhibit an unusual pinkish fluorescence. Width 9mm. Stack of 120 images.
Brown-tinged cerussite crystals in argentiferous galena with pyrite and minor sphalerite and siderite. Width 11mm. Stack of 100 images.
Greenish-brown short to long prismatic stolzite crystals with brown pyromorphite. Width 9mm. Stack of 100 images. Ex Val Hannah Collection. Pyromorphite is fluorescent pale orange, but also fluorescing are patches of sphalerite in the matrix (bright orange) and small anglesite crystals (bright yellow).
Sharp crystals of pale brass arsenopyrite and black sphalerite, and a tiny bit of chalcopyrite. Photo width 9mm. Stack of 50 images (arsenopyrite), and 60 images (sphalerite). Ex Jo Price specimen.
A lot going on here. Orange phantoms in quartz crystals. These are coated in white drusy quartz. Then there are colourless quartz scepters. But not just at the tips. There are tiny little sceptres ALONG the quartz crystals too. Oh, and also tiny pyrite cubes here and there. And, underneath,...
Complex black sphalerite with orange coated quartz crystals. Video best viewed full screen.
Fracture runs right through specimen. No sign of any repairs. Video best viewed full screen.
Tiny white calcite on yellowish calcite, chalcopyrite partially covered by sphalerite, and quartz and colourless fluorite. Video best viewed full screen.
Single twinned crystal on matrix. Ex Brian Shelton Collection. Video best viewed full screen.
Stalactite of black crystals of sphalerite with a quartz crystal and minor pyrite on a few sphalerite crystal terminations, 58mm wide. [private role=”administrator”]Purchased at Keystone, priced at $150.[/private]
Acquired by Joan Lamond in 2000 from Harry Critchley. Width of view 11mm. Stack of 6 images.
Ex Bernie Day specimen.
Old label “SW-Afrika”., Helmut Braith
ebay bayminerals_2012. Bay Minerals. Philip Grounds, Morecambe, Lancashire, England
ebay bayminerals_2012. Bay Minerals. Philip Grounds, Morecambe, Lancashire, England
ebay bayminerals_2012. Bay Minerals. Philip Grounds, Morecambe, Lancashire, England
Sharp crystals of sphalerite and galena. Purchased at Keystone, priced at $24.
Jean-Vincent Coureau
ex Jack Leach Collection
Collected. Gypsum post-mining?
