Mineral groups
Elementen
Zuivere elementen zoals goud, zwavel en diamant.
118 minerals
Silicaten
De grootste groep — kwarts, veldspaat, mica.
1.483 minerals
Sulfaten
Gips, bariet en verwante zoutmineralen.
387 minerals
Oxiden
Oxiden & hydroxiden — hematiet, korund.
531 minerals
Halogeniden
Zouten zoals haliet en fluoriet.
214 minerals
Carbonaten
Calciet, malachiet, dolomiet en meer.
428 minerals
Sulfiden
Metaal-zwavelverbindingen; pyriet, galeniet.
642 minerals
Fosfaten
Apatiet, turkoois en fosfaatmineralen.
695 minerals
News
Wildfire haze hangs over eastern US—and World Cup final
Heavy, acrid wildfire smoke blanketed much of the eastern United States on Saturday, marring preparations for the weekend's highly anticipated World Cup final to be held in an open stadium in New Jersey.
New environmental performance index highlights sustainability gains, and the challenges ahead
European countries continue to lead the world in environmental performance, according to the 2026 Environmental Performance Index (EPI), a biennial assessment produced by researchers at the Yale Center for Environmental Law & Policy and Columbia Climate School's Center for Integr...
Florida bloom toxins turn up in air, suggesting inhalation risk beyond shorelines
Research on Southwest Florida cyanobacterial blooms shows that the toxins they produce are aerosolized and potentially inhaled by people far from contaminated water bodies.
Scientific articles
In-depth research on crystallography, geochemistry and mineral formation — written and reviewed by researchers.
View the archiveThermocatalytic transcarbonation with diethyl carbonate for valorization of glycerol : recycling siliceous bauxite residue waste components and exploring the potential of sodalite hydroxide reservoir
Bauxite residues contain katoites and desilication products (sodalite and cancrinite), which are excellent candidates for Earth-abundant heterogeneous base catalysts from industrial waste sources. For the first time, they were tested in synthetizing the renewable and promising fuel or fuel additive glycerol carbonate for the purpose of recycling glycerol by-products from biodiesel production. Incorporation of silicate was found to enhance the previously established excellent catalytic activity of tricalcium aluminate (Si-free katoite). Performance of sodalites containing four different cage an...
Mckelveyite group minerals – Part 5: Bainbridgeite-(NdCe), Na 2 Ba 2 NdCe(CO 3 ) 6 ●3H 2 O, a new neodymium and cerium-dominant species from Mont Saint-Hilaire, Canada
Abstract. The new mckelveyite group mineral bainbridgeite-(NdCe), ideally Na2Ba2NdCe(CO3)6⚫3H2O, was found at Mont Saint-Hilaire, Quebec, Canada. It occurs in two distinct environments: (1) in a “carbonate pegmatite” as pale-yellow or orange barrel-shaped short prismatic crystals up to 2 mm in size, where bainbridgeite-(NdCe) forms thin rims while the core is composed of bainbridgeite-(YCe), and (2) in a hornfels rock as white or pale-grey tabular saucer-shaped crystals up to 0.5 mm in size. It has a white streak, a vitreous lustre, and no cleavage. Dcalc is 3.49 g cm−3. Bainbridgeite-(NdCe)...
Geometallurgical Diagnosis of Gold Loss in Refractory Quartz-Vein Gold Tailings Using Automated Mineralogy: A Case Study of the Baolun Gold Mine, Hainan Province, China
To enhance gold recovery from tailings of a quartz-vein gold deposit in Hainan, China, this study systematically characterized the chemical composition, mineral composition, and process mineralogical characteristics of gold particles using inductively coupled plasma optical emission spectrometry (ICP-OES), Advanced Mineral Identification and Characterization System (AMICS), and scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS). The results show that the tailings have an average gold grade of 0.44 g/t, and the gold occurs predominantly as native gold (average fineness a...
Multistage metasomatism during experimental reaction of axinite-(Fe) with F-, Cl-, OH-, Si-bearing fluids at 600 °C, 200 MPa and 800 °C, 500 MPa
Abstract Many studies have shown that geological processes, such as metamorphism and metasomatism, consist of multiple superimposed events developing over various timescales, with each stage overprinting the previous one and thus complicating reconstruction of the complete history. Here, we report the use of a natural calcium aluminum borosilicate mineral axinite-(Fe) [(Ca 2 Fe 2+ Al 2 BSi 4 O 15 (OH)], which occurs in skarn deposits, as a starting material in a series of experiments representing various metasomatic processes. The fluids used include NaF+H 2 O, NaCl+H 2 O, KCl+H 2 O, CaCl 2 +H...
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