Экспозиция Магнитностъ в Горном музее входит в раздел Свойства минералов отдела Общая минералогия. В этом отделе дается понятие о минералах, затем характеризуется конституция минералов, а далее разбираются свойства минералов как функция их конституции. Задача новой экспозиции — сообщение расширенного объема сведений об этом свойстве минералов и его зависимости от особенностей конституции минералов. Экспозиция выполнена по основному принципу музея, который должен быть каменной книгой по минералогии. Она состоит из образцов минералов и пояснительных текстов, схем и других экспонатов, позволяющих ознакомиться с вопросом полностью в музее ...
The presence of hornblende in slag is of great interest to both mineralogists, petrologists and metallurgists. In the studied titanium scoria, either no mineral is found that is similar to the previously described basaltic hornblende or is not amphibole at all, or it turns out that the mineral identified in the first study as basaltic hornblende is actually olivine, a member of the series of isomorphic compounds Mg₂Si0₄ — Fe₂Si0₄ (maybe with admixtures of some other orthosilicate molecules). This shows that all the assumptions that were made above when accepting the presence of amphibole in slags as a fact are incorrect: these titanium slags are more refractory and more viscous than the hypothetical slag with basaltic hornblende. With this article I would like to show the importance of the issue of the possibility of crystallization of amphiboles in slags and the need for special careful studies of crystalline formations in slags that are more or less similar to amphibole. It seems that in order to accurately establish the possibility of crystallization of minerals of this group in factory slags, those crystalline precipitations that are determined to be amphibole must be examined with X-rays.
The goal of our synthetic experiments was to artificially obtain individual components of stone casting in a well-individualized form and in sufficiently large quantities. We had to synthesize, firstly, those minerals that were determined by petrographers during microscopic studies of stone castings and, secondly, those minerals whose presence in the castings can only be assumed. The latter could be present in the form of microliths and not amenable to optical determination, but could be detected during X-ray studies of stone castings. The minerals we synthesized had to be subjected to X-ray examination in order to obtain standard Debyegrams necessary for decoding the Debyegrams of stone castings. In accordance with the task, the synthesis method was also chosen, namely the method of crystallization of minerals from the corresponding melts.
