No formation of other crystalline phases beside apatite
was observed, except for MgCa-HAp, where in addition to the apatite
a brushite structure also appeared.
2) Nanobacteria are the smallest (100-500 nm) recently discovered bacteria (3) that produce carbonate apatite
on their cell wall envelopes, and may be associated with stone formation and calcium deposition.
Sevtelecom will solicit the regional government in Murmansk for a quota on apatite
concentrate, and the government will instruct the local apatite
producer to make some of it available.
Synthetically produced hydroxy apatite
has been considered as a bone graft substitute for many years.
4 Mt of waste for the production of 546,134 t of apatite
concentrate, 97,852 t of agricultural lime and 4,763 t of phlogopite mica.
The minerals include K-feldspar (microcline), quartz, plagioclase, biotite, aegirine-augite, hornblende, riebeckite, titanite, epidote, apatite
, zircon and magnetite.
These properties confirmed the samples were apatite
Major organization : ADMINISTRATION OF MUNICIPAL EDUCATION CITY OF APATITE
WITH THE SURROUNDED TERRITORY OF MURMANSK REGION
8] ions can occupy two crystallographic sites in the apatite
structure: a 9-co-ordinated site A1 (4f) and a 7-coordinated site A2 (6h).
The dominating biogenic compounds are: (i) calcite as < 5 m[micro] micrite forming the groundmass mudstone, and both micrite of the matrix and > 5 m[micro] to 1 mm grains--skeletal particles (shells and their broken fragments) in wackestone, (ii) silica as < 5 m[micro] particles belonging to the groundmass of mudstone and wackestone matrix, (iii) organic matter (kerogen) in the mudstone and matrix of wackestone, (iv) phosphate skeletal fragments in certain interbeds of wackestone and very fine apatite
The test site is the Northern Hemisphere's largest source of apatite
, which is ranked five of 10 on the Mohs hardness scale.
The inorganic component comprises well-defined and tightly-packed nano apatite
crystals of calcium and phosphate with small amounts of trace elements.
Carbonatites have gained considerable economic significance because of their newly recognized importance in producing large-scale sources of niobium, cerium, apatite
, magnetite, barite, vermiculite, phosphorus, tantalum, uranium, thorium, copper, iron, titanium, vanadium, barium, fluorine, zirconium, and other rare or incompatible elements.
It discusses biological hard tissues in vertebrates, synthetic apatites
, hard tissue-related biomimetism, and apatite
-like biomimetic nanoceramics.
Once emptied of his lexicon the uplifted Vicuna of the genus Vicugna, given to wordiness, continues to explore large slanted hills with great apatite