"الجيولوجيا والموارد المعدنية في كلٍ من محافظة ظفار ومسقط وعُمان" [و‎‎٤‎١] (٩٦/٧١)

55
K
n
bonaceous material from the Ansarit exposure was analyzed by
Messrs. R. V. Briggs & Co., Btd., as follows:,—
Moisture on sample as received ..
Analysis on dried sample (100°C.)
1*92%
Acid insoluble (Silica, etc.)
74-06%
Oxide of iron
1-92%
Alumina
4-37%
Lime
0-72%
Magnesia..
1-54%
Sulphates
1-57%
Sodium chloride
0*30%
Undetermined
0 * 86 %
Ash (total of inorganic components)
Volatile Carbonaceous Matter and Comb.
85-34%
Water . .
9*06%
Fixed Carbon
5-60%
100-00
Carbonates as Carbon dioxide ..
0-04%
Combustible Carbon ..
6-99%
Water Soluble Salts:
Calcium sulphate ..
1 - 21 %
Magnesium sulphate
0-90%
Ferrous sulphate ..
0 - 02 %
Aluminium sulphate
0*13%
Sodium sulphate ..
0-28%
Sodium chloride ..
0-30%
2-84%
Although the two samples appear to be physically quite different,
the Ansarit material solid and hard and the Ghaiz specimen flaky,
there seems to be no doubt about their similarity by chemical
analysis, and it might be concluded, in both cases, that we are dealing
with a bituminous substance, petroleum residue, which has traversed
a bedding plane of the strata and travelled along the fault on its way
upwards from some oil-bearing stratum below. Unfortunately
neither specimens react to the solvent action of alcohol, petroleum
ether or benzol and do not even give a coloration, and thus, ac
cording to normal tests, neither sample can be regarded as a
petroleum residue at present. #
Mr. O. H. Little has mentioned the Bitumen from Lahia near
El Sidara (a specimen of pure black Bitumen) which assayed 96-00%