The Hands of Others:

Marine evaporites

“…Polyhalite of secondary origin has replaced anhydrite in large quantity in the Salado Formation of Texas and New Mexico (Schaller and Henderson, 1932;Cunningham, 1934;Mansfield and Lang, 1935). It also forms exceptionally thick deposits with anhydrite and halite in the Lower Evaporites of the English Zechstein, where much of it is again secondary (Stewart, 1949;Armstrong and others, 1951;Raymond, 1953). It is an important constituent of some Russian salt deposits (Kurnakov, Bokii, and Lepeshkov, 1937;Buyalov and Lepeshkov, 1937;Lepeshkov and Bodaleva, 1940) and occurs as an accessory mineral in many other evaporite bodies.…”

“…Douglasite (Ochsenius, 1878;Boeke, 1909b, c) is recorded with sylvite, carnallite, and halite at Douglashall near Stassfurt. Rinneite (Boeke, 1909a(Boeke, , b, c, 1911Rinne and Kolb, 1911) is a rare mineral of the German Zechstein, but occurs fairly commonly hi the English potash field, where it is mainly associated with halite, sylvite, and carnallite, and enters into various replacements (Stewart, 1951a(Stewart, , b, 1956Armstrong and others, 1951). Erythrosiderite is an alteration product of rinneite.…”

“…There are gradations between some of the evaporite layers (for example, a halite-anhydrite zone is commonly found between halite and sulfate zones), but, in general, the chemical differentiation between the principal zones has been remarkably effective. Stewart, 1949Stewart, , 1951 and the E. 3 borehole at Sleights (based on Armstrong and others, 1951), in the Whitby district, Yorkshire. (From Stewart, 1954, fig.…”

“…) Y30 DATA OF GEOCHEMISTRY Lotze (1938), andFulda (1935). English data from Stewart (1949Stewart ( ,1951aStewart ( , 1951bStewart ( , 1954, Armstrong andothers (1951), andRaymond (1953 Table 20 shows estimates of the proportions of the principal rock types in the Salado and Paradox evaporite bodies. The bittern salts are included with halite rock, but from figure 12 and plate 1, and the data given by Smith (1933Smith ( , 1938, they cannot amount to more than about 0.2 percent of the Salado Formation.…”

Pyrolytic Removal of the Plastic Mandrel from Sputtered Beryllium Shells

“…A small hole is laser drilled through the capsule wall including the internal plastic shell. 5 This hole needs to be drilled for filling, thus doesn't represent an unnecessary perturbation the capsule. Through this hole we force air (or in principle pure oxygen) by cycling the external pressure around the capsule while heating to ~500 °C.…”