This is an elbow fragment. The stone is black granodiorite. The stone is black granodiorite with sporadic black biotite inclusions and mica, the break areas look granulated. GD5.
From Nubia (Sudan), Kerma, K X grave K 1078 debris. 1914: Excavated by the Harvard University–Boston Museum of Fine Arts Expedition; assigned to the MFA in the division of finds by the government of Sudan.
Harvard University—Boston Museum of Fine Arts Expedition