25273: Goethite replacing Siderite with
Microcline (Carlsbad twin) - $12 Lake George, Park County, Colorado Miniature - 4.8 x 3.0 x 2.8 cm 18 grams Specimen status: Available Send an email with specimen number to order Three goethite replacements of
siderite to 1.2 cm sit together on a matrix of massive to
crystalline microcline. That goethite has replaced tabular
(compressed rhombohedral) siderite and not the usual
blockier rhombohedral siderite is unusual; of the 240 Colorado
goethite photos shown on Mindat, none show this
form. Rising on one side of the microcline matrix is a 3.0
cm Carlsbad twin. Over condition is quite nice.
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