Some phosphorus based catalysts are also found in different minerals such as vivianite and wavellite
. Phosphorus based catalysts are mixed with water to form phosphoric acid, H 3 PO 4.
The Fano experience was the start of a series of successes: Cahuila Mountain in 1981 for beryl, tourmaline, axinite and quartz; the Collier Creek mine in Arkansas for quartz and wavellite
; and the Black and Blue mine in 1988 in Harris Park, Colorado for amazonite, smoky quartz and topaz.
Minor minerals contained in the cement of the breccia body at Schneckenstein include tourmaline, fluorite, wolframite, molybdenite, ilmenorutile, apatite, chalcopyrite, malachite, azurite, and (rarely) cassiterite, turquoise, pyrite, wavellite
John Betts (www.johnbetts-fineminerals.com) had some of the new botryoidal wavellite
from Lime Ridge, Mt.
On some specimens, the blue vauxite forms casts after vanished spherical aggregates of wavellite
to 8 mm diameter, and one specimen even shows metallic black microcrystals of franckeite.
(3) Writing in March, (4) he announced: "I have visited not only all the celebrated mineral localities, but some never before prospected; and have collected many hundred pounds of fine and rare specimens." Among his discoveries (5) were gadolinite and fergusonite from Barringer Hill, Llano County, Texas; quartz crystal groups, variscite, wavellite
, perovskite and rutile from Arkansas; and sphalerite, galena, marcasite, dolomite and calcite crystals from Missouri.
The various phosphates much beloved by collectors, most abundantly wavellite
, were formed in the final stages of hydrothermal deposition, and were derived mostly from decomposition of primary fluorapatite.
[Al.sub.3](P[O.sub.4])[.sub.2](OH,F)[.sub.3] * 5[H.sub.2]O (GV)
It is colloidal with a reniform to stalactitic habit and a pale apple-green colon In some cases it shows a radial structure with a silky luster on the fibers, which are said to resemble wavellite
. There was insufficient material for chemical analysis, but a blowpipe test by Herzenberg indicated that it contained only iron, selenium and water.
Phenomenal specimens of Llallagua purple fluorapatite, wavellite
, stannite and the rarer tin sulfosalts, pyrrhotite.
Locally abundant specimens of large and well-crystallized wavellite
, fluellite and minyulite are present in quartz crystal-lined vugs, along with other minerals including native selenium, and a suite of associated phosphates.
There were brilliant blue balls of carbonate apatite from Humboldt County, Nevada, gorgeous realgar clusters from the Getchell mine, wavellite
from the Willard mine, ferrimolybdite from Idaho, erionite from Tunnel Beach, Oregon, and so on.