Studies with synthetic HAp showed that Zn2+ is readily acquired by the apatite as it competes with Ca2+ and can attain position on the
apatite crystal, making the HAp resistant to the acid dissolution.
Use a slightly different temperature for how cool the surface of the Earth is, for instance, and suddenly an
apatite crystal might look like it's been buried for much longer.
Indeed, abundant
apatite crystals were identified in the lumens of loops of Henle.
The most dramatic piece (which has been named the "Apatite Sapo King") is a cluster of albite and muscovite crystals measuring 15 X 23 X 48 cm, richly coated with sharp
apatite crystals up to 6 cm and, on top on the left side, one large bicolor
apatite crystal (very pale tan with a dark green core) measuring 5 X 5 cm (habit 6; see below).
Zinc plays an important role in the modulation of crystallinity of the
apatite crystals.
The formation of carbonate
apatite crystals in HA and BGHA surface is a very complex process and this attributes to the establishment of strong bonding zone at the bone-material interface.
showed a calcium phosphate rich interface layer with
apatite crystals grown on solid state reaction between glass ceramic and bone.
Hydroxy
apatite crystals are in shape of needles and plates 27A[degrees]--75A[degrees] thick, 44A [degrees]--75A[degrees] wide and 50A[degrees]--400A[degrees] long.
Dental enamel is arranged in the form of hexagonal
apatite crystals.
The
apatite crystals were sealed in epoxy resin, polished, etched with a 2.
Their simulations revealed that the unusually hydrogen-rich
apatite crystals observed in many lunar rock samples may not have formed within a water-rich environment, as originally thought.
Conduction of fission-track dating studies on the
apatite crystals using the external detector method and absolute approach yielded an average fission-track age of 29.
