The “Stella Polare Expedition” collection represents the rocks collected during the attempt to reach the North Pole in the winter of 1899–1900 by the Italian explorer Luigi Amedeo di Savoia, better known as “Duca degli Abruzzi”. The collection is currently kept on loan at the Regional Museum of Natural Sciences in Turin and belongs to the series of mineralogical-lithological collections owned by the University of Turin. It is unique from both the historical and the scientific points of view.It mainly consists of effusive magmatic rock samples, such as tholeiitic basalts, basaltic andesites and sub-intrusive rocks, such as dolerites. In the collection are also present sedimentary rocks (i.e. sandstone, siltite, jasper), high-grade metamorphic rocks (i.e. granulite) and a good number of mineralizations (i.e. quartz, opal, calcedony, calcite and zeolite), probably included within the effusive magmatic rocks in the form of veins or amygdales.From the geochemical point of view, it was possible to classify volcanic rocks as effusive products belonging to the sub-alkaline subduction-related tholeiitic series, which in turn can be distinguished into two main types, corresponding to basalts and basaltic andesites. Furthermore, the dolerites show geochemical features compatible with an oceanic environment analogous to Ocean Island Basalts, not or scarcely contaminated by the continental crust, in agreement with the geographic and geological position of the Franz Josef Land, located at the border of the Eurasian continental shelf and close to the Nansen depression ocean floor.The rediscovery and study of this collection have made it possible to enhance historically, and to deepen, with a scientific approach, the study of materials that would have been difficult to retrieve.

中文翻译：

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“斯特拉·北极”探险（1899–1900）：岩石收藏的研究和增强

“ Stella Polare Expedition”（斯特拉极地探险）系列代表了意大利探险家Luigi Amedeo di Savoia在1899年至1900年冬季尝试到达北极时所收集的岩石，也被称为“ Duca degli Abruzzi”。该收藏品目前由都灵地区自然科学博物馆出租，属于都灵大学拥有的一系列矿物岩石学收藏品。从历史和科学的角度来看，它都是独特的，它主要由喷出岩浆岩样品组成，如可膨胀玄武岩，玄武安山岩和次侵入性岩石，如白云岩。集合中还存在沉积岩（即砂岩，粉云母，碧玉），高级变质岩（即花岗石）和大量矿化物（例如石英，蛋白石，钙质，方解石和沸石），可能以脉状或扁桃体形式包含在喷出的岩浆岩中。从地球化学的角度来看，有可能将火山岩分类为属于与碱性俯冲有关的生烃系列的喷出物，反过来又可以分为两种主要类型，分别对应于玄武岩和玄武安山岩。此外，与欧洲大陆陆架边界的弗朗兹·约瑟夫（Franz Josef）土地的地理和地质位置相一致，白云岩的地球化学特征与类似于大洋洲玄武岩的海洋环境兼容，没有或几乎没有被大陆壳污染。并靠近南森study陷海底。对该集合的重新发现和研究使其有可能在历史上得以增强并加深，