Open AccessCharacterization of natural silicate garnets by means of non-destructive testing methods
Author(s) -
Irena Balčiūnaitė,
Ilja Ignatjev,
Donatas Kaminskas,
Gediminas Niaura,
Eugenijus Norkus
Publication year - 2021
Publication title -
chemija
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.16
H-Index - 15
eISSN - 2424-4538
pISSN - 0235-7216
DOI - 10.6001/chemija.v32i3-4.4549
Subject(s) - grossular , almandine , silicate , sri lanka , mineralogy , materials science , pyrope , tanzania , geochemistry , geology , chemistry , environmental science , metamorphic rock , organic chemistry , environmental planning
Two kinds of natural silicate garnets from the known origin countries were investigated: pyralspites – pyrope (Russia), almandine (India), rhodolite (India), spessartine (India), blue colour-change garnet (Sri Lanka), and ugrandites – andradite (Russia), demantoid (Russia), topazolite (Russia), rainbow garnet (Japan), grossular (Kenya-Tanzania), colourless grossular (India), light orange grossular (India), dark green tsavorite (Tanzania), medium green tsavorite (Kenya), light green tsavorite (Kenya), orange hessonite (Sri Lanka), pink hessonite (Sri Lanka), cinnamon hessonite (India) and uvarovite (Russia). The chemical composition of the garnets was performed with a scanning electron microscope. The physical properties such as specific gravity and refractive index were measured for the majority of garnets investigated. The spectroscopic methods – visible light absorption spectrophotometry, Raman spectroscopy and cathodoluminiscence microscopy – were applied for the characterization of the mentioned natural silicate garnets.