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  1. Unfading Red

    ... a high iron content that likely includes hematite and limonite . There are few identifiable crystal grains in this specimen. ... are filled with unidentifiable mica minerals. Hematitie, limonite and other opaque minerals often form envelopes around these ...

    Raven Mueller - 2015-08-12

  2. Variegated Purple

    ... suggests the presence of significant hematite , limonite , and or siderite . Owning to the aphanitic nature of the ...

    Raven Mueller - 2015-08-12

  3. Royal Purple

    ... of the specimen suggests the presence of hematite and limonite . Owning to the aphanitic nature of the material, many of the ...

    Raven Mueller - 2015-08-12

  4. Unfading Red

    ... a high iron content that likely includes hematite and limonite . There are few identifiable crystal grains in this specimen. ...

    Raven Mueller - 2015-08-12

  5. Unfading Mottled Green and Purple

    ... presence of chlorite as well as hematite and or limonite . Owning to the aphanitic nature of the material, many of the ...

    Raven Mueller - 2015-08-12

  6. Purple

    ... by a high iron content that likely includes hematite , limonite , and siderite . Owing to the aphanitic nature of the ...

    Raven Mueller - 2015-08-12

  7. Lueders, Light Antique R.B.

    ... that is parallel to bands of iron hydroxide ( limonite ) staining. This staining is more prevalent near the rock surface and ... or alternatively more alteration near the rocks surface. The limonite staining imparts a yellow-orangish color to the rock. Extant voids are ...

    Raven Mueller - 2015-08-12

  8. Lueders, Charcoal R.B.

    ... from channels are filled with iron oxides/hydroxides ( limonite and hematite ) and secondary calcite . These channel/cracks ...

    Raven Mueller - 2015-07-22

  9. Lueders, Light Antique

    ... have a maximum dimension of .5 mm. Iron hydroxide ( limonite ) staining is present in patches and is responsible for the yellowish ...

    Raven Mueller - 2015-07-22

  10. Lueders, Buff R.B.

    ... origin was noted. Staining from iron hydroxide s ( limonite ) is fairly common and imparts a yellowish color to the hand sample. ...

    Raven Mueller - 2015-07-22

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