Mosque Name: ‘Arja
Year of construction (AD): 800-899
GPS: 24.377190 56.450441
Gibson Classification: unknown
A semicurcular mihrab was found at the copper mines near Sohar, Oman.. It was dated through objects, C14, stratigraphy, construction techniques, and pottery which lasted from the 9th century tot he 11th century. The C14 dates were taken from adjacent slag and kilns resulting in dates from the 6th, the 10th, and the 12th-13th century. The mosque was about 4 x 5.6 meters.
Costa, P.M., and Wilkinson, T.J., 1987. The Hinterland of Sohar: Archaeological Surveys and Excavations within the Region of an Omani Seafaring City, The Journal of Oman Studies 9, Muscat: The Ministry of National Heritage and Culture, 125, 189.
See also: Mapping Ancient Production and Trade of Copper in Oman and Obsidian in Ethiopia. https://brill.com/view/book/edcoll/9789004362321/BP000015.xml