Springer Iranian Journal of Science and Technology (Sciences) 1028-6276 Articles in Press 2016 03 13 General natural metallic structure on tangent bundle 3633 10.22099/ijsts.2016.3633 EN Shahroud Azami Department of Mathematics, Faculty of Sciences, Imam Khomeini International University, Qazvin, Iran Journal Article 2015 11 08 In this paper, ‌ we study the natural lifts type as complete and horizontal of a metallic structures on the tangent bundle of a Riemannian manifold and find some interesting results about structures, metric, distribution and the relationship between them. In the end, we introduce general natural lifts of a metallic structure and a semi-Riemannian manifold on the tangent bundle and get the conditions <br> under which the tangent bundle endowed with such a metallic structure and a general natural lifted metric is a Riemannian manifold.