DOI issue:
Syria
DOI article:Daszkiewicz, Małgorzata; Bobryk, Ewa: Chemical and mineralogical composition and some technological parameters of medium-coarse ware from Tell Rad Shaqrah
DOI Page / Citation link:https://doi.org/10.11588/diglit.41242#0232
crystalline carbonate compounds of the non-plastic part of the body
(beside some cryptocrystalline carbonates after recarbonisation and
secondary calcite deposited during burial; fig. 1). In a high-fired
sherd (MD2112), the matrix is isotropic, strongly changed
thermally, and the calcium is built-in the structure of calcium
silicates or calcium aluminum silicates (fig. 2). Beside this, some
pores with rims from cryptocrystalline secondary carbonates can be
observed. In the remaining samples, coarse crystalline carbonates
were not observed. Cryptocrystalline carbonates are only detected
as small non-plastic particles, as rims inside pores or locally
dispersed in the matrix. The matrix of particular samples represent
different stages of the thermal transformation (fig. 3 and 4).
Thin-section studies generally revealed very similar recipes of
the clay preparation for all the samples. The matrix covers 55 to 65
percent of the volume (tab. 2a).
Grain fraction [0.01-0.1mm] with 92-96% of the whole is
predominating. The percentage of this fraction alone in sample
MD2115 is below 90% (88%) due to the fact that larger grains of
carbonates are still observed because of the low original firing
temperature. Only in this sample the grain fraction (0.1-0.5mm]
represented more than 10% (12%) of the whole. Grains with
diameters larger than 0.5 mm, consisting of marly clay aggregates,
are found only in a few samples. These do not represent a temper,
but a not very well homogenized body.
Non-plastic components in all the samples are dominated by
quartz (tabs. 2a and 2b). It can be observed in fractions below and
above 0.1mm. Muscovite, biotite, pyroxenes and amphiboles are
only found in the fine fraction [0.01-0.1mm] with the exception of
the low fired sample MD2115 in which micas are larger than
0.1mm. In quantitative estimation (tabs. 2a and 2b), marly clay
inclusions, which can be observed in all the samples, are counted as
rock fragments. Beside them, sedimentary rock fragments, such as
cryptocrystalline silica and fragments of magmatic rocks (quartz +
230
(beside some cryptocrystalline carbonates after recarbonisation and
secondary calcite deposited during burial; fig. 1). In a high-fired
sherd (MD2112), the matrix is isotropic, strongly changed
thermally, and the calcium is built-in the structure of calcium
silicates or calcium aluminum silicates (fig. 2). Beside this, some
pores with rims from cryptocrystalline secondary carbonates can be
observed. In the remaining samples, coarse crystalline carbonates
were not observed. Cryptocrystalline carbonates are only detected
as small non-plastic particles, as rims inside pores or locally
dispersed in the matrix. The matrix of particular samples represent
different stages of the thermal transformation (fig. 3 and 4).
Thin-section studies generally revealed very similar recipes of
the clay preparation for all the samples. The matrix covers 55 to 65
percent of the volume (tab. 2a).
Grain fraction [0.01-0.1mm] with 92-96% of the whole is
predominating. The percentage of this fraction alone in sample
MD2115 is below 90% (88%) due to the fact that larger grains of
carbonates are still observed because of the low original firing
temperature. Only in this sample the grain fraction (0.1-0.5mm]
represented more than 10% (12%) of the whole. Grains with
diameters larger than 0.5 mm, consisting of marly clay aggregates,
are found only in a few samples. These do not represent a temper,
but a not very well homogenized body.
Non-plastic components in all the samples are dominated by
quartz (tabs. 2a and 2b). It can be observed in fractions below and
above 0.1mm. Muscovite, biotite, pyroxenes and amphiboles are
only found in the fine fraction [0.01-0.1mm] with the exception of
the low fired sample MD2115 in which micas are larger than
0.1mm. In quantitative estimation (tabs. 2a and 2b), marly clay
inclusions, which can be observed in all the samples, are counted as
rock fragments. Beside them, sedimentary rock fragments, such as
cryptocrystalline silica and fragments of magmatic rocks (quartz +
230