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.