Zippeite is a hydrous potassium uranium sulfate mineral with formula: K 4 (U O 2) 6 (S O 4) 3 (O H) 10 ·4 (H 2 O). It forms yellow to reddish brown monoclinic -prismatic crystals with perfect cleavage. The typical form is as encrustations and pulverulent earthy masses. It forms as efflorescent encrustations in underground uranium mines.

Named by William Haidinger in 1845 in honour of František (Franz) Xaver Maximilian Zippe (15 January 1791, Kytlice, Austrian Empire - 22 February 1863, Vienna, Austria), mineralogist. After attending secondary school in Dresden, Zippe studied philosophy at the …

2016年12月30日 · Zippeite is a potassium uranyl sulfate mineral that forms on uranium mine wastes and that may be important in nuclear waste disposal. Little is known about its thermodynamic properties. In this study, we synthesized zippeite, K 3 (H 2 O) 3.3 [(UO 2) 4 (SO 4) 2 O 3 (OH)], and measured its thermodynamic properties.

Zippeite K(UO2)2(SO4)(OH)3• H2O c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Monoclinic, pseudo-orthorhombic. Point Group: 2/m. Rare crystals are rhomboidal or elongated along [001], to 0.5 mm; in radial or vermicular aggregates, earthy efflorescences, powdery coatings, and crusts. Twinning: Probable, observed in synthetic ...

Zippeite is a mineral with formula of K 2 [(U 6+ O 2) 4 (S 6+ O 4) 2 O 2 (OH) 2](H 2 O) 4 or K 2 [(UO 2) 4 (SO 4) 2 O 2 (OH) 2](H 2 O) 4. The corresponding IMA (International Mineralogical Association) number is IMA1971-029a. The IMA symbol is Zip.

Zippeite. Comments: Sandstone with a 1.5 cm vein of black uraninite bisected with a 2mm vein of bright yellow zippeite. Location: Jackpot Mine, Laguna Mining District, Cibole City, New Mexico. Scale: 4.8 cm high. © Paul M. Schumacher

Zippeite K 2 [(UO 2) 4 (SO 4) 2 O 2 (OH) 2](H 2 O) 4 Crystal Data: Monoclinic, pseudo-orthorhombic. Point Group: 2/m. Rare crystals are rhomboidal or platy on {010}, elongated along [001], to 0.5 mm; in radial or vermicular aggregates, …

Zippeite is formed as a secondary mineral and as an efflorescent crust in uranium mines. Efflorescent means it forms on the surface of a rock by the evaporation of water when in contact with the dry air of the mine.

Bright yellow powdery crystal groups of less than 0.5mm each. Small specimen but good coverage and color and is confirmed by EDS. The photo on the left is the more accurate color tone. Click thumbnail images for larger view. Zippeite from Homestake mine, McKinley Co., New Mexico, United States. Radioactive!!

Zippeite is a uranium sulfate found in the oxidation zone of uranium deposits. It was named after Franz Xavier Maximillian Zippe, an Austrian mineralogist who studied the mineral. Zippeite forms coatings, powdery encrustations, or compact aggregates composed of microscopic lamellar crystals, yellow to orange-red and reddish-brown in color. It ...