spessartine

Spessartine of an orange-yellow is found in Madagascar.

Another intriguing find is the blue color-changing garnets from Madagascar, a pyrope spessartine mix.

Other members of the garnet group include: almandine, andradite, pyrope, spessartine, and uvarovite.

Associated minerals include bixbyite, quartz, orthoclase, topaz, spessartine, pseudobrookite and hematite.

Garnet, commonly almandine or spessartine, is a common mineral within pegmatites intruding mafic and carbonate-bearing sequences.

Association minerals include: albite, lepidolite, topaz, beryl, tourmaline, spessartine, tantalite and fluorite.

Associated minerals include spessartine, tephroite, alleghanyite, hausmannite, pyrophanite, alabandite, rhodonite and rhodochrosite.

The extracted coticule in Vielsalm owes its very fine abrasive properties to spessartine, which is a particular variety of garnet .

Spessartine or spessartite, is a nesosilicate, manganese aluminium garnet species, MnAl(SiO).

Spessartine: MnAl(SiO)

They are pyrope, almandine, spessartine, grossular (varieties of which are hessonite or cinnamon-stone and tsavorite), uvarovite and andradite.

The coticule is a metamorphic microcristalin schist, very fine grained, 35 to 40% of it small crystals of spessartine, of about 5 to 20 microns in diameter.

It occurs associated with hematite, magnetite, bixbyite, ilmenite, enstatite-ferrosilite, tridymite, quartz, sanidine, topaz, spessartine, beryl, mica, cassiterite and apatite.

Pyrope forms a solid solution series with almandine and spessartine, which are collectively known as the pyralspite garnets (pyrope, almandine, spessartine).

It is commonly associated with beryl, quartz, spessartine, hematite, pseudobrookite, hausmannite, braunite and topaz in pneumatolytic or hydrothermal veins and cavities and in metamorphic rocks.

It has been found in association with barite, barysilite, calcite, copper, franklinite, garnet, glaucochroite, hausmannite, jerrygibbsite, manganosite, pyrochroite, rhodochrosite, sonolite, spessartine, sussexite, tephroite, vesuvianite, willemite, and zincite.

Todorokite is a rare constituent of the manganese oxide deposits at Saude and Urandi, in Bahia, Brazil, as a result of supergene enrichment of the metamorphic country rock that contains spessartine (MnAl(SiO)) and other manganese minerals.