The mineral zircon, known as zirconium silicate, is commonly found as a minor constituent in igneous rock such as granites and some kinds of metamorphic rock. Gem quality zircon stones are usually rare. These gemstones are formed mainly in pegmatites (coarse-grained igneous rock) and in fissures.
Temperature: A copse is flaccid immediately after death, muscle stiffening, rigor mortis, commences after about three to four hours, reaches maximum stiffness after 12 hours, and gradually dissipates until approximately 48 to 60 hours (two and a half days) after death.
As the body begins to decompose, blood seeps down. through the tissues and settles in lower parts of the body. Red blood cells break down, spilling their contents. Big Idea 2: Rigor Mortis Death Stiffness Rigor mortis starts within 2 hours of death. The stiffness starts in the head and works its way down to the legs.