Vivianite crystals are often found inside fossil shells, such as those of bivalves and gastropods, or attached to fossil bone. Vivianite can also appear on the iron coffins or on the corpses of humans as a result of a chemical reaction of the decomposing body with the iron enclosure.

Feb 22, 2023 · Vivianite, a rare phosphate mineral (Fe 3 (PO 4) 2 −(H 2 O) 8) has been found growing on organic materials such as fossil shells, animal waste deposits, and even on decomposing bodies.

Oct 25, 2016 · The formation of vivianite (also known as blue ironstone) is helped along by bacteria which act to dissolve iron out of soil and phosphate out of bodies while also directing the growth of the...

Vivianite crystals are often found inside fossil shells, such as those of bivalves and gastropods, or attached to fossil bone. Pure fresh vivianite is colorless, but the mineral oxidizes very easily, changing the color, and it is usually found as deep blue to …

Vivianite (Fe 2+ 3 (PO 4) 2 •8H 2 O) is an iron phosphate mineral that is often associated with bones or decaying organic materials. This mineral is normally colorless but can be a very pale green, dark blue, dark greenish blue, and then black with oxidation.

1 day ago · The interior of the fossilized mollusk shell features crystals of vivianite in striking sprays of lustrous, variably-sized blades. Some the blades have very slight gemmy sections and colors range from black to blue-green. The matrix is a dense shell exterior fossil hash. This phosphate pod deposit is now mined through and gone.

Oct 27, 2016 · At first, it would appear that these oddly bluish crystal formations embedded in his skin are from freezing to death or some other sort of trauma, but it's actually a mineral called vivianite (or blue ironstone) and it happens to form quite often on corpses left in …

Aug 1, 2024 · Vivianite is an iron phosphate mineral that changes colour from colourless to deep blue or green when exposed to light. Found in fossil shells and bones, it’s prized by collectors and studied by mineralogists. This article covers its properties, history, and uses.

Vivianite is a bluish mineral sometimes encountered in archaeological deposits. It is notable for its tendency to change color from white or grayish to blue on exposure to air. Vivianite requires specific conditions for its formation—sources of iron, phosphate, and water, as well as low levels of oxygen and sulfide.

Vivianite is an extremely rare gem mostly due to its difficulty of faceting. It is very soft, fibrous and somewhat flexible. It is a very attractive mineral specimen with vibrant colors. Vivianite is sometimes found inside fossil clam or snail shells or attached to fossil animal bone.