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In the framework of a 30-night spectroscopic survey of small near-Earthasteroids (NEAs) we present new results regarding the identification ofolivine-rich objects. The following NEAs were classified as A-type usingvisible spectra obtained with 3.6 m NTT telescope: (293726) 2007 RQ17, (444584)2006 UK, 2012 NP, 2014 YS34, 2015 HB117, 2015 LH, 2015 TB179, 2015 TW144. Wedetermined a relative abundance of $5.4\% $ (8 out of 147 observed targets)A-types at hundred meter size range of NEAs population. The ratio is at leastfive times larger compared with the previously known A-types, which representless than $\sim1\%$ of NEAs taxonomically classified. By taking into accountthat part of our targets may not be confirmed as olivine-rich asteroids bytheir near-infrared spectra, or they can have a nebular origin, our resultprovides an upper-limit estimation of mantle fragments at size ranges bellow300m. Our findings are compared with the "battered-to-bits" scenario, claimingthat at small sizes the olivine-rich objects should be more abundant whencompared with basaltic and iron ones.

Olivine-rich asteroids in the near-Earth space