ANDRADITE VAR. TOPAZOLITE
A gorgeous, large cluster of the rare variety of andradite garnet known as topazolite. Crystals fill out all sides with great coverage and the color is especially rich for Cerro de la Concordia. Under fluorescent lighting the crystals are buttery yellow, The majority of them are super well crystallized, and in amazing condition. Superb example for the species!
More info:
The andradite var. topazolite occurrence at Cerro de la Concordia, Mexico, forms within a skarn deposit at the contact between limestone and granodiorite intrusions. The garnets crystallize through metasomatic processes involving iron- and calcium-rich hydrothermal fluids interacting with carbonate host rocks. Formation temperatures range between 400-600°C. The crystals display characteristic rhombic dodecahedral habits and exhibit colors ranging from yellow to yellow-green. Individual crystals commonly reach 1-3cm in size. The deposit represents a typical calcic skarn mineralization system, with the topazolite forming during the prograde metasomatic stage. Associated minerals include vesuvianite, diopside, and wollastonite, typical of the high-temperature calc-silicate mineral assemblage in this environment.