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- Noun

A steel-gray mineral, of metallic luster, commonly fibrous massive. It is a sulphide of antimony and lead, with a little iron.

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  • Jamesonite


    Jamesonite is a sulfosalt mineral, a lead, iron, antimony sulfide with formula Pb4FeSb6S14. With the addition of manganese it forms a series with benavidesite. It is a dark grey metallic mineral which forms acicular prismatic monoclinic crystals. It is soft with a Mohs hardness of 2.5 and has a specific gravity of 5.5 - 5.6. It is one of the few sulfide minerals to form fibrous or needle like crystals. It can also form large prismatic crystals similar to stibnite with which it can be associated. It is usually found in low to moderate temperature hydrothermal deposits.

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    Iolaus jamesoni is a butterfly in the family Lycaenidae. It is found in the Democratic Republic of the Congo, Uganda, western Kenya and north-western Tanzania. The habitat consists of forests.

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    Neptis jamesoni

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  • Calleagris jamesoni

    Calleagris jamesoni

    Calleagris jamesoni, Jameson's flat or Jameson's skipper, is a butterfly in the family Hesperiidae. It is found in Angola, the Democratic Republic of the Congo, Tanzania, Zambia, Malawi, Mozambique, Zimbabwe and Botswana. The habitat consists of Brachystegia woodland, savanna and forest margins.

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