Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



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  • This page displays localities at which this mineral is found, and estimates of the oldest possible geologic age of the mineral at these localities.


    • Minerals queried: Fransoletite

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    Max Age (Ma)Min Age (Ma)mindat IDLocality containing MineralCountryTectonic SettingsDated Locality IDDated Locality (Max Age)Reference (Max Age)Reference (Min Age)Excel ID (Max Age)Excel ID (Min Age)Query Minerals# of Query Minerals at LocalityLat DegLat MinLat SecLon DegLon MinLon SecDecimal Degree
    P170217023366USAUSAAM93_1215AM93_1215Be-00023Be-00023Fransoletite 1374912-83-42-4937.82,-83.713611111111
    P170217024104South Dakota, USAUSAAM93_1215AM93_1215Be-00023Be-00023Fransoletite 143582-100-5-3243.967222222222,-100.09222222222
    P1702170223305Custer Co., South Dakota, USAUSAAM93_1215AM93_1215Be-00023Be-00023Fransoletite 1434245-103-30-2543.7125,-103.50694444444
    P170217024111Custer District, Custer Co., South Dakota, USAUSAAM93_1215AM93_1215Be-00023Be-00023Fransoletite 143449-103-35-3043.735833333333,-103.59166666667
    P1702170226805Fourmile, Custer District, Custer Co., South Dakota, USAUSAAM93_1215AM93_1215Be-00023Be-00023Fransoletite 1434333-103-41-443.725833333333,-103.68444444444
    MDB170217024122Tip Top Mine (Tip Top Pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USAUSA4122Tip Top Mine (Tip Top Pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USAAM93_1215AM93_1215Be-00023Be-00023Fransoletite 1434256-103-40-943.715555555556,-103.66916666667

    This mineral directly occurs at 1 locality (1 localities according to mindat, 6 localities if parents are counted as well)
    Of the 1 locality at which this mineral occurs, 1 has an age. (6 of the 6 parent localities have ages)


    MDThe mineral occurs at this locality according to MED, but does not have an age yet.
    MDThe mineral occurs at this locality according to MED, and has an age.
    The mineral occurs at some child of this locality.
    The locality at which the mineral occurs does not have an age...this is the closest parent locality with an age, relative to that mineral. This is not ideal.

    AThis mineral is Anthropogenic.
    GThis mineral is directly dated.
    BThis mineral is reported as having this age.
    YThis mineral is using an age reported as an element mineralization period.
    OThis mineral is using an age calculated from all data at the locality.
    RThe age displayed for this mineral originates from a different, non-child locality.
    PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
    This mineral's age has not yet been recorded.

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    If a locality has both a GPS coordinate, and either contains or has at least one child locality containing at least one of the minerals listed above, then this map displays a single marker for that locality.

     This bottom-level locality is directly dated. (1 total)
     This locality is directly dated, but is not bottom-level. (0 total)
     This locality is not directly dated, and is not bottom-level. (5 total)

     This bottom-level locality has an age assigned to it from some other locality. (0 total)
     This locality does not have an age assigned to it. (0 bottom-level + 0 top/mid-level = 0 total)

       






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