Crystalline form not necessarily an indication of definite chemical composition; or, on the possible variation of constitution in a mineral species independent of the phenomena of isomorphism

Clicks: 1
ID: 307703
1860
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal

Ranked #7,580 of 8,486 articles by views in american journal of science

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 8,486 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
IN a memoir presented to the American Academy of Arts and Sciences in September, 1855,t I described two new compounds of zinc and antimony which I named st£bio'bt'zincyle and stiMotrizincyle, on account of their analogy in composition to the metallic radicals of organic chemistry.The symbols of these compounds are Sb Zn II and Sb Zn 3; and they are distinguished by tlie high perfection of their crystalline forms, the last being still further characterized by a most remarkable property of decomposing water quite rapidly at 100 0 C. I stated in the same memoir that crystals of these two compounds could be obtained containing proportions of zinc and antimony differing very widely from those required by the law of definite proportions; and I also traced out the relation between the composition of the crystals, and that of the menstruum in which they are formed.It is my object in the present pa:r.er to consider the bearing of these facts, already fully describe, on the idea of mineral species, and to offer a few suggestions which I hope may be of service in determining the true chemical formulre of many minerals, and thus in simplifying the science of mineralogy.But in order to render myself intelligible, it will be necessary to recapitulate very briefly the foots in question, referring to the original memoir for the full details.The crystals both SbZn ll and SbZn 3 can be obtained with great readiness.It is only necessary to melt together the two metals in the atomic proportions, and when the metals are fully alloyed, to proceed e~actly as in crystallizing sulphur.The melted mass is allowed to cool until a crust forms on the surface, which then is broken, and the liquid metal remaining in the interior l>0ured out.On subsequently breaking the crucible, the interior lS found lined with magnificent metallic crystals, which, when not tarnished by oxydation have a silver-white lustre.In the course of my investigations on these compounds, crystallizations were made, or attempted, of alloys, differing in composition by one half to five per cent, according to circumstallces, from the alloy containing 95 per cent of zinc, to that containing 95 per cent of antimony; but only two C'rystalline forms were observed, that of Sb Zn s and that of Sb Zn a.The crystals of the • Communicated by the Author.
Reference Key
openalex_W2329926041 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors John P. Cooke
Journal american journal of science
Year 1860
DOI
10.2475/ajs.s2-30.89.194
URL
https://doi.org/10.2475/ajs.s2-30.89.194
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.