Telia amphigenous, blackish, rounded, pulverulent, rarely in groups, naked, sometimes surrounded by ruptured epidermis.
UREDINIA mostly on leaves, sometimes on petioles and stems, amphiphylous, chiefly hypophylous, yellowish or pale yellowish brown, scattered or combined in groups, naked, round, about 1-2 cm in diam., subepidermal, Pulverulent; UREDINIOSPORES occurs in many shapes as spheroidal, oval, pyriform, sometimes sub-globular or irregular shapes and mostly with pigmented yellowish contents, some spores observed with flattened bases, (21-) 22.5-35 (-37) x (17-) 17.5-20 (-23) um (av.
This may have occurred owing the greater amount of pulverulent
material of the artificial sand compared with natural sand.
Uredinia abaxial, yellowish, pulverulent
, scattered, minute.
In an occurrence discovered in 1981 in the alcove, white, pulverulent
, very finely fibrous masses (habit E) partially filled cavities up to 8 cm across, and encrusted the associated weloganite, quartz, calcite and first-generation dawsonite.
bleaching powders contain polymers that are described in the patent application as nonionic or anionic amphiphilic polymers and are exemplified by Ser-ad FX 1100 (now probably sold under the tradename Dapro FX 1100 from Elementis Specialties) and Jaguar XC-95/3 from Rhodia.
masses of plumbojarosite large enough and pure enough to constitute ore were round in the Erupcion mine.
Sahama and Lehtinen (1968) made a regional study, describing acicular habits, ghostlike remnants and pulverulent
masses of honey-yellow to dark gray or greenish bismutite.
masses of siderotil form abundantly as a post-mining mineral on the walls of tunnels, especially near entrance adits, as a dehydration product of melanterite.
Chalcopyrite is veined and largely replaced by chalcocite which, in turn, is veined by an olive-brown, fine-grained material, and to a much lesser extent by veinlets of powellite and pulverulent
Brochantite occurs as pulverulent
patches and flattened green crystals to 0.5 mm on samples of carbonate-cyanotrichite from the southeast corner of the 5,075 bench.