Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Przegląd Geologiczny

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Wstępne dane o nowym wystąpieniu różowego korundu (rubinu) w Sławniowicach w Sudetach Wschodnich

Łobos Krzysztof, Pawlik Tomasz

Przegląd Geologiczny

2021

Vol. 69, nr 3

169--173

Grains of light pink and pink-violet corundum (ruby) were recognized in the alluvia of the Maruszka stream cutting the deposit of Sławniowice marble. The grains reach a size of up to 3 mm. They are usually slightly rounded or angular and sometimes barrel-shaped. X-ray powder diffraction and energy-dispersive X-ray spectroscopy analysis of corundum were performed. Mineral inclusions in the corundum grains have been also identified.

Wstępne dane o spinelu właściwym (MgAl2O4) z kopalni granodiorytu Łażany II w masywie Strzegom–Sobótka

Łobos Krzysztof, Pawlik Tomasz, Klukowski Michał

Przegląd Geologiczny

2019

Vol. 67, nr 10

823--827

The study conducted in the granodiorite quarry at Łażany (Strzegom–Sobótka granitoid massif, Sudetes, Poland) identified spinel crystals within a marble interlayer contained in hornfels. Spinel occurs in the form of perfect octahedrons of violet color. The crystals reach a size of up to 2 mm, but typically are much smaller. The hornfels zone with a calcsilicate rock and a marble inlayer is about a dozen meters thick and most probably comes from the metamorphic cover of the Strzegom batholith. Semi-quantitative analyses of spinel were performed. In addition, chondrodite-like or monticellite-like minerals and vesuvianite have been found together with the spinel.