『Abstract
　Most available classifications of uranium deposits are based on the characteristics of the host rocks or on the morphology of the ore deposits. The aim of the present paper is to propose the basis for a genetic classification of these deposits. After a short introduction on the geochemical behavior of uranium in fluids and silicate melts and on the main uranium fractionation mechanisms operating in uranium-rich peraluminous, metaluminous, and peralkaline melts, the most recent metallogenic models of the main types of uranium deposits are shortly reviewed.』

Introduction
Uranium solubility in fluids and silicate melts
Uranium fractionation in igneous rocks
A genetic classification of uranium deposits
　Uranium deposits related to surface processes
　Synsedimentary uranium deposits
　Uranium deposits related to hydrothermal processes
　　Vein-type deposits
　Deposits related to partial melting
　Deposits related to crystal fractionation
Conclusions
References

Table 1 Historic world uranium production up to 2007 (compilation from various sources), Reasonably Assured Resources (RAR) and Inferred Resources (IR) from IAEA (2008)

	Past production Including 2007	RAR ＜130 USD/kg U	IR ＜130 USD/kg U	Total
Unconformity	348,000	491,600	158,100	997,700
Sandstone	665,000	999,500	524,400	2,188,900
IOCG (iron oxide-copper-gold)	42,000	499,400	401,500	942,900
Paleoplacer	.246,000	163,600	138,300	547,900
Vein	376,000	800,000	167,700	1,343,700
Intrusive	95,000	183,700	104,200	382,900
Volcanic	234,000	157,800	53,500	445,300
Metasomatite	30,000	304,900	368,800	703,700
Other	171,000	284,300	154,400	609,700
Unspecified	70, 000	96,700	59,700	226,400
TOTAL	2,277,000	3,338,300	2,130,600	7,745,900