Bismuthite

For this scheme, m, n, and p have been defined for minerals as being even numbers. Notice also that the formula for bismuthite and aikinite have been doubled in keeping with the reported model where only (l) = Cu and (ll) = Pb are known [78]. Also defined are the terms A (A=m/4) and B (B=n/2). It has been observed that for most mineralogical systems, when A-i-B is even, the corresponding space group was the non-centrosymmetric, Pmc2i, and when A-vB is... 

W. C. Ball and H. H. Abram prepared a series of mixed salts of lithium nitrito-bismuthite. Thus, if 5 grms. of ammonium nitrate in 10 c.c. of water are added to... 

W. C. Ball and H. H. Abram added 10 c.c. of bismuth nitrate soln. to 40 c.c. of a 50 per cent. soln. of sodium nitrite, and then a soln. of 5 grms. of ammonium nitrate and 2 grms. of nickel nitrate in 20 c.c. of water—all cooled to 0°—in a few minutes a yellowish-brown, microcrystalline powder of ammonium nickel nitrito-bismuthite was formed. The composition of different specimens varied considerably, and the salt slowly decomposes it is quickly hydrolyzed by water. In an analogous manner, potassium nickel nitritobismuthite, K4NiBi2(N03)12.6H20, was formed as an unstable, yellowish-brown, microcrystalline powder similarly... 

J Arsenites antimonites, bismuthites, sulfites, selenites, tellurites iodates. 

JA Arsenites, antimonites, bismuthites without additional anions, without H2O... 

JB. Arsenites, antimonites, bismuthites with additional anions, without H2O 4.JC. Arsenites, antimonites, bismuthites without additional anions, with H2O 4.JD. Arsenites, antimonites, bismuthites with additional anions, with H2O 4.JE. Sulfites... 

OXIDES (Hydroxides, vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)... 

Actinide antimonites and bismuthites containing the main group element in the +3 oxidation state are currently severely restricted with only one example of each being known, U02Sb204 [91] and uranosphaerite, Bi(U02)020H [31]. From these few examples, rich chemistry has already been observed. Both compounds are layered, and both contain EO4 square pyramidal anions. 

Table 4. A listing of uranyl antimonite and bismuthite compounds.

J. J. Berzelius in 1814. Bismuth occurs less rarely than mercury, but shows a more frequency of appearance as silver. It is found in its native form, and also in minerals such as bismuthite (bismuth sulfide) and bismite (bismuth oxide). The main use of bismuth is in pharmaceuticals and in low-melting point alloys which are used as fuses ( 4000 tons annually). Occupational intoxication by these alloys are rare, and in most instances the adverse effect is caused by other metals present in the alloys such as lead and cadmium. Bismuth as a metal is classed as nontoxic. 

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