Petrography lower if wholly or partly vitreous. The specific gravity of the more common rocks range from about 2.5 to 3.2. Archaeologists use petrography to identify mineral components in pottery. This information ties the artifacts to geological areas where the raw materials for the pottery were obtained. In addition to clay, potters often used rock fragments, usually called "temper" or "aplastics", to modify the clay's properties. The geological information obtained from the pottery components provides insight into how potters selected and used local and non-local resources. Archaeologists are able to determine whether pottery found in a particular location was locally produced
The NLT Study Bible The NLT Study Bible The NLT Study Bible was released in September, 2008, by Tyndale House Publishers, Inc. following a decade long process from original conception to publication. A Genesis "sampler" was released in April of the same year. Featuring a brand new set of notes and features put together by what Tyndale calls "a dream team of today's top Bible scholars", the NLT Study Bible "focuses on the meaning and message of the text as understood in and through the original historical context." In print form, the NLT Study Bible contains 2528 pages of material. It is also available