Barite Optical Properties
| Gladstone-Dale |
CI meas= 0.014 (Superior) -
where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) -
where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1428,KPDmeas=
0.1428,KC= 0.1448 |
| Optical Data |
Biaxial (+), a=1.634-1.637,
b=1.6355-1.638, g=1.646-1.648,
bire=0.0110-0.0120,
2V(Calc)=36-42,
2V(Meas)=36-40. Dispersion weak,
r < v |
| Pleochroism (x) |
Colorless |
| Pleochroism (y) |
Colorless |
| Pleochroism (z) |
Colorless |
Barite Calculated Properties
| Electron Density |
ſelectron=3.99 gm/cc
note: ſBarite =4.48 gm/cc |
| Photoelectric |
PEBarite = 265.56
barns/electron
U=PEBarite X ſelectron=1,060.27 barns/cc |
| Radioactivity |
GRapi = 0 (Gamma Ray
American Petroleum Institute Units) |
| |
Barite is Not Radioactive |
API grade barite. Provide density
increase without altering mud theology.
Also available in bulk form.
Barite Uses
Drilling
Weighting material with a specific
gravity of 4.37 used to increase the
apparent density of a liquid drilling
fluid system. Barite [BaSO4] is the most
common weighting agent used today. It is
a mined material ground to an API
specification such that particle sizes
are predominantly in the 3 to 74 micron
range.
Drilling Fluids
A dense mineral comprising barium
sulfate [BaSO4] that commonly occurs
with a range of accessory minerals, such
as quartz, chert, dolomite, calcite,
siderite and metal sulfides. Used as a
weighting agent for all types of
drilling fluids, barites are mined in
many areas worldwide and shipped as ore
to grinding plants in strategic
locations. Pure barium sulfate has a
specific gravity of 4.50 g/cm3, but
drilling-grade barite is expected to
have a specific gravity of at least 4.20
g/cm3 to meet API specifications.
Contaminants in barite, such as cement,
siderite, pyrrhotite, gypsum and
anhydrite, can cause problems in certain
mud systems and should be evaluated in
any quality assurance program for
drilling-mud additives.
Recommended Filled of Application
| Kind of powder |
Talc |
Mica |
Kaolin |
Red Iron oxide |
Fluorine |
Dolomite |
Calcite |
Bentonite |
Barite |
| Ceramics |
• |
|
• |
• |
• |
• |
• |
• |
• |
| Chinaware |
• |
|
• |
|
|
|
|
|
|
| Excavation |
|
• |
|
|
|
• |
• |
• |
• |
| Elecrode |
• |
• |
|
|
• |
• |
• |
|
• |
| Feed |
|
|
|
|
|
|
• |
• |
|
| Glass |
• |
|
|
|
• |
• |
• |
|
• |
| Glaze |
|
|
• |
|
• |
• |
|
• |
|
| Glue |
• |
|
• |
|
|
|
• |
|
|
| Gerannlation (p.v.c) |
|
|
|
|
|
|
• |
|
|
| Insecticide |
• |
|
• |
|
|
|
|
• |
• |
| Isolation |
• |
|
|
|
|
|
• |
|
|
| lining |
|
|
|
|
|
• |
• |
|
• |
| Paint |
• |
• |
• |
• |
|
|
• |
• |
• |
| Pharmaceutical |
• |
|
• |
|
|
|
• |
• |
• |
| Plastic |
• |
|
• |
|
|
|
• |
|
• |
| Rulp & paper |
• |
|
|
|
|
|
• |
• |
• |
| Rubber |
• |
• |
• |
|
|
|
• |
|
• |
| Textile |
• |
|
|
|
|
|
• |
|
• |
|