The mine has produced an interesting suite of minerals in recent years, including pale blue to green aquamarine, alpine-like smoky quartz crystals, spessartine, danburite, columbite, cassiterite, helvite, and numerous phosphates including apatite, lithiophilite, purpurite, herderite, strengite, phosphosiderite, hureaulite, robertsite, eosphorite
, frondelite and mitridatite (A.
Minerals in the pegmatite are: quartz, microcline, muscovite, albite, amblygonite, "apatite," beryl, uraninite, elbaite, members of the tantalite group, secondary uranium minerals, triphylite, triplite, purpurite, rockbridgeite, tavorite, barbosalite, hureaulite, eosphorite
, phosphosiderite, carlhintzeite, colquirite, pachnolite, ralstonite and fluellite.
Valadares, Minas Gerais, Brazil) had about 75 specimens, found last October, of ernstite-coated eosphorite
from the Almerino mine, Linopolis, Minas Gerais; they are by far the best yet of this familiar material.
Correia Neves and Lopes Nunes (1968) described bermanite, eosphorite, variscite, phosphosiderite, hureaulite, montebrasite, fluorapatite, amblygonite, and triplite from Alto Ligonha pegmatites.
Correia Neves and Lopes Nunes (1968) described eosphorite, variscite, phosphosiderite, hureaulite, montebrasite, fluorapatite, amblygonite, triplite and bermanite from Alto Ligonha pegmatites.
Accompanying minerals such a roscherite and eosphorite
are highly characteristic of this occurrence.
Additional minerals present include zircon, gahnite, minor spessartine, hectorite and coronadite, and secondary phosphates fluorapatite, eosphorite and crandallite.
Central Pegmatite Sulfide Pods Phosphate Pods Primary Minerals Primary Minerals Primary Minerals Albite Bismuthinite (?) Albite Beryl Covellite Gahnite Fluorapatite Digenite Lithiophilite Gahnite Galena Spessartine Manganocolumbite Hessite Triplite Microcline Triploidite Muscovite Secondary Triphylite Pyrochlore Minerals UK-1 Quartz Chrysocolla Zircon Rutile (niobian) Malachite Schorl UK-2 Secondary Phosphates Spessartine Crandallite Spodumene Eosphorite Uranmicrolite Fluorapatite Uranpyrochlore Zircon Secondary Minerals Coronadite Hectorite ACKNOWLEDGMENTS
One other item of interest was wardite crystals associated with childrenite and eosphorite
, from the famous locality of Rapid Creek, Yukon.
Associated minerals: albite, quartz, manganoan almandine, muscovite, siderite, fluorapatite, elbaite, lepidolite, beryl, montebrasite, rhodochrosite, cassiterite, manganocolumbite, uraninite, lollingite, zircon, eosphorite, moraesite, ferroan roscherite and kosnarite.
Associated minerals in the cavities are: wardite, eosphorite, cyrilovite, a kidwellite-like mineral, rockbridgeite, leucophosphite, saleeite and montmorillonite.