On the basis of the type, the global garnet market is segmented into almandine,
andradite, grossular, pyrope, spessartine, and uvarovite.
Rich collections of glassware--pieces of water-bottles, cups, wineglasses, flacons were found, and also jewelry including beads made of
andradite and carnelian, glass, rings, and bronze bracelets.
Origin of optical variations in grossular
andradite garnet.
Bill Larson, Palagems.com, Fallbrook, California, USA, for rough pieces of iridescent
andradite from Mexico and a slab of jadeite from Russia.
Almandine, spessartine, grossular, uvarovite,
andradite and pyrope are six minerals which are regarded as belonging to the garnet family.
From the XRD test, as shown in Figure 9, we can see that the hydration products such as hydrated calcium silicate, calcium aluminosilicate, and hydrated
andradite increase significantly during hydration, indicating that crystallization increases with curing age.
The most spectacular piece is a combination specimen of sphalerite, quartz,
andradite and hedenbergite over 25 cm in diameter.
The following standards and were used: Al on sanidine, Ca on titanite, Cl on NaCl, Cr on chromite, F on topaz, Fe on
andradite, K on orthoclase, Mg on olivine, Mn on spessartine, Na on albite, Nb on columbite, Si on titanite, Ti on titanite and Zn on gahnite.
Demantoid garnet is a rare and beautiful bright grass green sub-variety of
andradite garnet.Tsavolite, is a bright green variety of grossular garnet, its colour being induced by the presence of chromium.
The main finding was that the group of compounds [Ca.sub.3][Al.sub.2][Si.sub.3][O.sub.12] (
andradite), [Ca.sub.3][Fe.sub.2][Si.sub.3][O.sub.12] (grossularite), [Ca.sub.3][Al.sub.3][H.sub.12][O.sub.12] and [Ca.sub.3][Fe.sub.2][H.sub.12][O.sub.12] form a complete series of solid solutions, with a garnet structure.
Epidote, chrolite,
andradite and apatite have also been identified.
[37] studied the grossular-andradite solid solution using high pressure X-ray diffraction and showed the bulk modulus of grossular-andradite solid solution decreases with the increasing
andradite content.
