4699 Willemite, Preguiça Mine, Sobral da Adiça, Moura, Beja District, Portugal
Colourless hexagonal prisms. Ex Jacques-Yves Desescaut, Marseilles. Width of view 6mm. Stack of 25 images.
Colourless hexagonal prisms. Ex Jacques-Yves Desescaut, Marseilles. Width of view 6mm. Stack of 25 images.
Purple fluorite cubes with tiny pyrite, some elongated, on white quartz. Ex Bernie Day Collection. Width of view 6mm. Stack of 89 images. Click on the image below for a higher resolution version.
White sprays of wavellite on dark green, almost black, blocky libethenite. Width of view 6mm. Stack of 90 images. Click on the image below for a higher resolution version.
Sharp green pseudo-octahedral crystals on quartz. Width of view 3mm. Stack of 120 images. Labelled as “Estremoz, Évora, Portugal”. Other such specimens on Mindat are tagged with “Uncertain locality”. The locality Miguel Vacas Mine, Nossa Senhora da Conceição e São Bartolomeu, Vila Viçosa, Évora, Portugal, is considered more likely. Click...
Type locality. Partial orange crystal 9mm wide, no matrix.
Labelled La Palma (Insel), Puerto de Tazacorte, Santa Cruz de Tenerife, Kanarische Inseln, Spain. Ex Manfred Früchtl. Analcime trapezohedron modified by a cube (hard to capture in the photo) with white phillipsite and stubby white bladed thomsonite(?). Width of view 6mm. Stack of 50 images. Click on the image below...
Very pale-blue fibrous agardite with green Cu-adamite (or zincolivenite). Ex Jo Price Collection. Width of view 6mm. Stack of 100 images. Click on the image below for a higher resolution version.
Silver hexagonal crystals. Ex Münchener Micromounters. Width of view 6mm. Stack of 50 images. Click on the image below for a higher resolution version.
Yellow prismatic pyromorphite crystals with tiny reddish-brown stolzite (not in photo). Ex John Sobolewski. Width of view 6mm. Stack of 106 images. Click on the image below for a higher resolution version.
Pale brown hexagonal crystals with complex terminations. Width of view 6mm. Stack of 72 images. Click on the image below for a higher resolution version.
Light brown hexagonal prisms with a partial white coating. Minor sulphides also present (pyrite, galena and sphalerite). Ex Robert Kurcbart 4/2005. Width of view 6mm. Stack of 85 images. Click on the image below for a higher resolution version.
Pale pink gmelinite with colourless to white stilbite on a thin layer of lustrous pyrite. Width of view 6mm. Stack of 60 images. Click on the image below for a higher resolution version.
Originally labelled as gmelinite but it is clearly twinned chabazite. Colourless pseudohexagonal chabazite (phacolite) with rhombic chabazite. Width of view 6mm. Stack of 80 images. Click on the image below for a higher resolution version.
Acquired by Joan Lamond in 1999 from the Holland Micro Group. Calcite fluoresces a nice pink under longwave and shortwave UV, and a bit more deeper and intense under medium wave. Width of view 9mm. Stack of 85 images (white light), 23 images (MWUV). Click on the images below for...
Blue to almost black scorzalite crystals, Width of view 9mm. Stack of 60 images. Click on the image below for a higher resolution version.
Blue scorzalite scattered through matrix. Width of view 9mm. Stack of 55 images. Click on the image below for a higher resolution version.
Black berlinite with light blue inclusions (burangaite?), white augelite, blue scorzalite, and colourless/grey/white albite(?), fluorescent red under shortwave UV, brown garnet(?), a small amount of moss green wicksite(?) and colourless quartz. Width of view 6mm. Stack of 60 images. Click on the image below for a higher resolution version. Below:...
Pale greenish-blue trolleite with brown rutile and possible white augelite. Width of view 9mm. Stack of 40 images. Click on the images below for a higher resolution version.
Yellow prismatic titanite crystals with dark green, black, and green pyroxene crystals, possibly ferro-katophorite(?), aenigmatite(?), and/or aegirine(?), in an albite vugh. Width of view 6mm. Stack of 100 images. Click on the image below for a higher resolution version.
Type Locality. Ex Richard Bell 2007. Whitelight width of view 3mm, stack of 33 images. Longwave UV photo width of view 3mm, stack of 21 images. Click on the images below for a higher resolution version.
Tiny sprays of ferrarisite on pink erythrite. Ex Jim Daly. Width of view 3mm. Stack of 36 images. Click on the image below for a higher resolution version.
Click on the images below for a higher resolution version. Below: 1. Guérinite, Sainfeldite. Below: 2. Picropharmacolite. Below: 3. Rauenthalite, Picropharmacolite, Sainfeldite. Below: 4. Phaunouxite, Rauenthalite, Picropharmacolite, Haidingerite, Sainfeldite.
Type Locality for heulandite-Sr. Typical heulandite crystals with quartz, calcite and chalcopyrite crystals. The calcite fluoresces white under longwave UV. Width of view 9mm. Stack of 40 images. Click on the image below for a higher resolution version.
Type Locality. A slice polished on one face showing relatiely pale purple charoite with green needles of aegirine. There are small patches of highly fluorescent green steacyite under shortwave and mediumwave UV. There are also small patches of an unknown species, grey under white light but deep red under shortwave...
White sprays on iron-stained matrix. Width of view 6mm. Stack of 50 images. Click on the image below for a higher resolution version.
Type Locality. Straw-coloured felted fibrous mass of yuksporite. Width of view 9mm. Stack of 30 images. Click on the image below for a higher resolution version.
Type Locality for lauite which is in another vugh. Cacoxenite on probably metatorbernite. Width of view 4.5mm. Stack of 100 images. Click on the image below for a higher resolution version.
Opaque pale green metatorbernite with tiny yellow meta-autunite crystals. Width of view 3mm. Stack of 70 images. Click on the image below for a higher resolution version.
Type Locality for both cuspidine and vesuvianite. Dark to olive green vesuvianite with tan cuspidine (not in photo). Ex Joan Lamond Collection. Acquired by Joan in 1997 as part of a Swiss collection. Width of view 3mm. Stack of 50 images. Click on the image below for a higher resolution...
Cyprine was originally defined as a blue variety of vesuvianite. However, cyprine is now a recognised distinct species. Without analysis, a firm distinction can’t be made. Width of view 6mm. Stack of 80 images.
Greenish-yellow crystal and crust on quartz. Ex Jo Price Collection. Width of view 4.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
Type Locality. Tiny metallic needles. Width of view 4.5mm. Stack of 80 images. Click on the image below for a higher resolution version.
A spherical colourless fluorite that fluoresces purple-blue under longwave UV. Orange fluorescence is likely sodalite. Ex Münchener Micromounters. Width of view 6mm. Stack of 40 images (UV) and 60 images (white light). Click on the images below for a higher resolution version. Below: Under white light. I didn’t notice the...
Greenish-grey zircons with black inclusions and tiny colourless crystals (sanidine?) sprinkled on terminations, and as most of the matrix. The sanidine fluoresces pink under shortwave UV. Associated with black “biotite” and orange fluorescing sodalite under longwave UV. Width of view 6mm. Stack of 100 images (white light), 9 images (LWUV)....
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.
Prismatic bright silver crystals from the Schöller dump. From Mindat “A coal mine which started in 1899 as the Schoeller mine. From 1946, it was named Zdeněk Nejedlý Mine, from 1951 Nejedlý I Mine. After 1990 again renamed Kladno Mine in Libušín”. Width of view 6mm. Stack of 44 images....
A radiating cluster of purplish-red erythrite crystals. Collected in 1987. Ex Jo Price Collection. Width of view 3mm. Stack of 45 images. Click on the image below for a higher resolution version.
Colourless monoclinic crystals of claudetite with pale yellow sulphur crystals in slag. Ex John Sobolewski. Width of view 3mm. Stack of 60 images. Click on the image below for a higher resolution version.
Radial aggregates of metallic grey arsenolamprite crystals. Width of view 6mm. Stack of 20 images. Click on the image below for a higher resolution version.
Partially polished crystal of green andradite (Demantoid) showing horsetail inclusions. Width of view 6mm. Stack of 34 images.
Ex Joan Lamond Collection. Labelled as thomsonite, but clearly identical habit to offretite pictured on Mindat. Width of view 3mm. Stack of 40 images. Click on the image below for a higher resolution version.
Sharp bluish anatase crystals. Width of view 5mm. Stack of 50 images. Click on the image below for a higher resolution version.
Yellow-orange tinzenite with minor red parsettensite (not in photo) and black manganese oxides. Width of view 14.5mm. Stack of 34 photos. Click on the image below for a higher resolution version.
Lustrous black melanite variety of garnet. Ex Jo Price Collection. Width of view 5mm. Stack of 42 images. Click on the image below for a higher resolution version.
Native copper porphyroblasts in saturated wood from an ancient mine. Width of view 14.5mm. Stack of 34 images. Click on the image below for a higher resolution version.
Pale adamite crystal aggregates with deeper green cores of copper-bearing adamite (or zincolivenite?). Interestingly, as you move the specimen around under the microscope, the “hard dividing line” between the two colours looks like it moves! Some sort of optical phenomenon. Width of view 7.75mm. Stack of 50 images. Click on...
Purple cobaltkoritnigite, pink erythrite balls, thin bladed prismatic silky white hörnesite, pale pink sainfeldite, white weilite, and silky white sprays of picropharmacolite. Type Locality for picropharmacolite. Width of view 7.75mm. Stack of 36 images. Click on the image below for a higher resolution version.
Silver cobaltite crystal in matrix. Ex Jo Price Collection. Width of view 7.75mm. Stack of 44 images. Click on the image below for a higher resolution version.
Fragments of iron showing some signs of oxidation. Width of view 7.75mm. Stack of 46 images. Click on the image below for a higher resolution version.
Blue and green scorodite. A specimen acquired at the 2023 Joint Australasian Mineralogical Societies Seminar in Tasmania. Width of view 6mm. Click on the image below for a higher resolution version.
Brown wulfenite crystals, some with hoppered faces. Ex Diederik Visser 6/2005. Width of view 3.5mm. Stack of 30 images. Click on the image below for a higher resolution version.
Thick tabular orange-brown wulfenite crystals. Width of view 5.5mm. Stack of 60 images. Click on the image below for a higher resolution version.
Small orange, yellow, and greenish wulfenite crystals with even smaller pyrite crystals. Width of view 3.5mm. Stack of 26 images. Click on the image below for a higher resolution version.
Prismatic wulfenite with smaller acicular mimetite. Width of view 3.5mm. Stack of 50 images.
A single blocky orange crystal of wulfenite with pale yellow mimetite and colourless fluorite crystals on a bed of quartz. Width of view 3.5mm. Stack of 75 images. Click on the image below for a higher resolution version.
Pale yellowish-green stacked pseudo-octahedral crystals. Width of view 3.5mm. Stack of 44 images. Click on the image below for a higher resolution version.
Purple crystals. French label. Ex Jo Price Collection. Width of view 2.6mm. Short stack of 7 images.
Purple cubes, one with what looks like it had tried to start an octahedral crystal. Ex Jo Price Collection. Width of view 3.5mm. Stack of 33 images. Click on the image below for a higher resolution version.
Massive blue vein material. Width of view 4.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
Deep orange tabular crystals of crocoite. Width of view 7.67mm. Stack of 47 images. Click on the image below for a higher resolution version.
Vughs with crocoite crystals in a massive piece of crocoite, with yellow powdery coatings and small crystals of bindheimite. Width of view 11.5mm. Stack of 61 images. Click on the image below for a higher resolution version.
A small orange crocoite crystal poking out from pyromorphite. Ex Lesenechal Collection. Width of view 11.5mm. Stack of 94 images. Click on the image below for a higher resolution version.
Tiny anatase crystals in vughs. Ex Jo Price Collection. Width of view 5.75mm. Stack of 50 images. Click on the image below for a higher resolution version.
Type Locality. Pale pinkish platy crystals of brizziite on yellow sulphur. Ex Jo Price Collection. Width of view 11.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
Dark green-brown partially terminated crystal frozen in matrix. Width of view 11.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
A single white cluster of crystals on matrix. Width of view 3.5mm. Stack of 30 images. Click on the image below for a higher resolution version.
Pale blue crystals, typical for this locality. Ex Carlo Alciati. Width of view 11.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
Clusters of white bladed crystals. Width of view 11.5mm. Stack of 55 images. Click on the image below for a higher resolution version.
Lots of colourless fluorite crystals that fluoresce pink, on a solid fluorite matrix that fluoresces blue. Ex Jo Price Collection. Width of view 11.5mm. Stack of 90 images. Click on the image below for a higher resolution version.
Colourless quartz crystals that appear to have formed on another mineral that has since gone. There is a partial gap between the bottom of the quartz plate and the rest of the matrix. Width of view 11.5mm. Stack of 50 images. Click on the image below for a higher resolution...
Tiny green prisms of pyromorphite an a cavity of fluorite. The top half of the specimen is all massive fluorite and the bottom half, massive barite. Width of view 11.5mm. Stack of 100 images. Click on the image below for a higher resolution version.
Cube-octahedral galena crystals on and in colourless to slightly hint of green cubes of fluorite. Ex Jo Price Collection. Width of view 11.5mm. Stack of 70 images. Click on the image below for a higher resolution version.
Small lustrous hexagonal green prisms. Ex Ian Graham. Width of view 5.75mm. Stack of 70 images. Click on the image below for a higher resolution version.
Superb lustrous apple green bladed annabergite crystals with dull green smithsonite. Width of view 11.5mm. Stack of 170 images. Click on the image below for a higher resolution version.
Green titanite crystals with tiny worms of dark green chlorite and colourless-white albite. Width of view 17.25mm. Stack of 60 images. Click on the image below for a higher resolution version. Click here for a short video going through the stack of photos used to create the final product.
Pale green naujakasite with pink villiaumite, black aegirine and colourless sodalite that fluoresces orange. Ex Ole-Thorstein Ljøstad. Width of view 11.5mm. Stack of 90 images. Click on the image below for a higher resolution version. Click here for a short video going through the stack of photos used to create...
Not as aesthetic as those from the better-known occurrence at Aris, Namibia, but this one is from the Type Locality. Tan radiating sprays. Collected by Ole-Thorstein Ljøstad. Width of view 11.5mm. Stack of 60 images. Click on the image below for a higher resolution version.
Pale green naujakusite with black arfvedsonite. Colourless sodalite shows up as orange patches under UV. Tan patches unknown. Prismatic green crystals possibly aegirine? Ex Jo Price Collection. Width of view 11.5mm. Stack of 70 images (white light) and 10 images (UV). Click on the images below for a higher resolution...
Red crystals embedded in matrix. Ex Jo Price Collection. Width of view 11.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
A cluster of yellow-green apatite crystals with the largest 31mm wide, with minor cassiterite and arsenopyrite. The apatite exhibits orange zoned fluorescence. Ex Barry Porter Collection. Ex Mike and Coralie Fisher Collection. Click on the images below for a higher resolution version.
Typical green crystals. Type Locality. Ex Jo Price Collection. Width of view 5.75mm. Stack of 32 images. Click on the image below for a higher resolution version.
Brown aggregate of prismatic stolzite crystals with yellow plumbogummite(?), transparent crystals and opaque aggregates, in quartz in a cavity left by galena(?). Width of view 11.5mm. Stack of 70 images. Click on the image below for a higher resolution version.
Green crystals of gartrellite on carminite in one small vugh, and by itself in another (photo). Orange-brown cube of pharmacosiderite with an Alunite Supergroup mineral in another. Width of view 2.88mm. Stack of 24 images. Click on the image below for a higher resolution version.
Green cubes of bariopharmacosiderite in a vugh in quartz that is lined with brown goethite. Width of view 5.75mm. Stack of 50 images. Click on the image below for a higher resolution version.
A dusting of goethite on some of the chabazite rhombs. A small stacked stilbite is nestled amongst the chabazite (centre of photo). Ex Jo Price Collection. Width of view 5.75mm. Stack of 40 images (stilbite) and 55 images (goethite on penetration twin chabazite). Click on the images below for a...
Tiny pyrite crystals part altered to goethite on calcite. There are two generations of calcite. The earlier one fluoresces red, and the later fluoresces white. There is a sharp delineation between the two. Ex Jo Price Collection. Width of view 5.75mm. Stack of 45 images. Click on the image below...
Pink twinned rhombohedral chabazite with colourless analcime. Tiny green spots of saponite (towards the bottom left for example) and biotite phenocrysts (not in photo) also present. Some of the chabazites exhibit an unusual stack-like habit (towards the bottom left). Ex Jo Price Collection. Width of view 11.5mm. Stack of 35...
Colourless spheres of melanophlogite. Ex Bernie Day Collection. Width of view 17.25mm. Stack of 30 images. Click on the image below for a higher resolution version.
Tiny blue jeremejevite with white sodalite, colourless prismatic topaz and colourless/grey sanidine. Hematite also on specimen. Width of view 5.75mm. Stack of 30 images. Click on the image below for a higher resolution version.
Pale pink puffballs with darker pink surfaces. Width of view 3mm. Stack of 30 images. Click on the image below for a higher resolution version.
Off-white rosettes and platey crystals of epididymite with green aegirine needles. Width of view 8.63. Stack of 70 images. Click on the image below for a higher resolution version.
Green demantoid andradite garnets nestled in pinkish-white chrysotile (asbestos). Precise locality not known. There are a few possibilities: Dossi di Franscia and the Sferlùn asbestos mine amongst others. Ex Jo Price Collection. Width of view 11.5mm. Stack of 40 images. Click on the image below for a higher resolution version.
White weilite with pink tufts of erythrite, and pale pink balls of sainfeldite(?) and deeper pink-purple prismatic crystals of sainfeldite. Ex Jo Price Collection. Width of view 5mm. Stack of 37 images (weilite) and 63 images (erythrite).
Colourless flat bladed crystals. Type Locality. Ex Jo Price Collection. Width of view 2.5mm. Stack of 52 images. Click on the image below for a higher resolution version.
Octahedral crystals of faujasite with opal spheres and coating. Exact species of faujasite not known. Ca, Mg and Na recorded (the latter two being Type Locality species). Width of view 5mm. Stack of 51 images. Click on the image below for a higher resolution version.
Four spheres with a slight pinkish hue. Width of view 19mm. Stack of 63 images. Click on the image below for a higher resolution version.
Ex Bernie Day Collection. Ex Jack and Dawn Leach Collection. Interesting choice of mounting with this specimen. There is really only one decent crystal, the rest of the cinnabar being patches frozen in matrix, and that crystal is right down the bottom edge of the specimen. Width of view 5mm....
White sprays of ferrierite on tan calcite. Heulandite crystal not in photo. Ex Bernie Day specimen. Width of view 5mm. Stack of 70 images. Click on the image below for a higher resolution version.
Type Locality for monteponite. Tan smithsonite with yellow and brown monteponite. Width of view 3.5mm. Stack of 30 images. Click on the image below for a higher resolution version.
Pink puffballs of erythrite in a cavity that was originally likely filled with sulphides. Acquired from Helmut Braith. Width of view 3.5mm. Stack of 35 images. Click on the image below for a higher resolution version.