Zippeite is a hydrous potassium uranium sulfate mineral with formula: K 4 (U O 2) 6 (SO 4) 3 (OH) 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.

Note: Many of the specimens that are labeled "zippeite" are actually natrozippeite (the sodium-dominant member of the group), especially those from sedimentary deposits. Structurally related to redcanyonite .

Zippeite from Poison canyon, Utah. This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.

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

Comments: Yellow crust of nickel-zippeite on matrix. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag

The yellow patches you see here are probably zippeite (darker yellow) and uraninite (uranium oxide- lighter yellow) - this specimen came from the Delta Mine in Utah, which was mined almost exclusively for uranium; this specimen went to the well-known collection of …

We have synthesized analogues of zippeite, sodium-zippeite, magnesium-zippeite, zinc-zippeite and cobalt-zippeite, and report their crystal structures herein. We have also synthesized single crystals of three zippeite-group compounds that have not been observed in na-ture: two compounds containing NH4 (designated

View Zippeite Mindat View Zippeite . ZIPPEITE from Jackpile Mine, near Laguna, Cibola Co., New Mexico Special Info EDS Confirmed. 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.

A great example of rich, colorful secondary zippeite, boltwoodite and other U species from the well-known Happy Jack mine in southern Utah. Ex. Jack Nieburger collection with several old labels. Quite HOT… measures over 180,000 CPM on my Ludlum Model 3 …

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.