6.1" Polished Sagenite Agate Slab - Indonesia

This is a gorgeous slab of Indonesian Sagenite Agate that has been polished to a mirror-finish on one side and features sagenite crystal formations that are scattered throughout agate.

Comes with an acrylic display stand.

Sagenite agate is a formation of agate that contains acicular (needle-like) formations of fanning sagenite crystals that have been encapsulated in a mass of pseudomorphic agate. This occurs when agate fills a cavity within rock that had prior formations of minerals, in this case being the golden sagenite crystal clusters.

Sagenite is a name that often refers to acicular rutile crystals, which in this case is accurate. The golden crystals within this specimen are technically rutile (TiO2) crystals.

Agate is a variety of microcrystalline quartz (chalcedony) that displays translucence and in some cases banding. Agate primarily forms when silica-rich fluids fill pockets within rock and/or fossils, resulting in deposition of the silica along the walls of the rock. This process can result in banding patterns as the composition and impurities of the fluids change over time. These banding patterns can either form as flat layers or rounded layers, depending on the surfaces available for deposition.
DETAILS
SPECIES
Quartz var. Agate & Sagenite
LOCATION
Indonesia
SIZE
6.1 x 4.1", .23" thick
CATEGORY
SUB CATEGORY
ITEM
#141195