Goethite crystals from Villa Ahumada, Chihuahua, Mexico – small cabinet specimen as unique piece
This attractive small cabinet specimen features a natural geode lined with numerous Goethite crystals within a drusy cavity. The interior surfaces are densely covered by sparkling microcrystals, hosting several clearly visible rosette-like Goethite crystal aggregates. The crystals display an appealing silky to slightly metallic luster and create an attractive contrast against the light-colored quartz druse. The well-developed crystal rosettes give the specimen an outstanding aesthetic appearance and make it a desirable collector's piece.
Geology & Origin
Goethite is a widespread iron oxyhydroxide mineral that commonly forms through the weathering of iron-bearing minerals. Under favorable conditions it can also develop distinct crystals and characteristic rosette-shaped aggregates. The Chihuahua region of Mexico is renowned for its diverse mineral occurrences and regularly produces aesthetic iron minerals associated with quartz and other secondary mineral species. Drusy geodes containing well-formed Goethite crystals such as this specimen are especially appreciated by collectors of decorative mineral specimens.
This table is for general information and orientation, although the sizes of the stones may vary. In addition, this specification is handled differently from region to region.
Sizes
Description
approx. Sizes in mm/cm
approx. Sizes in INCH
Capsule
Capsule
0.1–0.5 mm in a transparent hard capsule (approx. 1 cm)
capsule contents 0.1–0.5 mm
capsule contents 0.004–0.02 in
TN/mm
Micromount (TN = Thumbnail)
everything fitting in a TN Perky box or a MM box of approx. 1 in
approx. 0.5–2.5 cm
max. 1 in
Min
Miniature specimen
will not fit a TN or MM box anymore
approx. 2.5–5 cm
approx. 0.2–1.0 in
Scab
small cabinet specimen
approx. one-third to half a hand size
approx. 5–9 cm
approx. 1.0–2.0 in
Cab
cabinet specimen
full hand size
approx. 9–15 cm
approx. 2.0–3.5 in
large Cab
large cabinet specimen
approx. two hand sizes
approx. 15–30 cm
approx. 3.5–6.0 in
very large Cab
very large cabinet specimen
everything larger, no upper limit
Abbreviations commonly used in mineralogy.
Abbreviation
Meaning
xl
single crystal, possible with matrix
xls
noticeable crystals
(xl)
embedded or damaged
(xls)
embedded or damaged
MASS
massive and/or amorphous pieces
TYP
type locality of the original description
SWUV
shortwave-UV-reaction
UV
ultraviolet reaction
SC
self-collected
U
unique (single unique piece)
Usage Instructions
This product is ideal as a collector's item, decorative element, teaching material, or for scientific and exhibition purposes.
Legal Notices
Safety
We accept no liability for damages resulting from improper and/or non-recommended use. Please carefully assess the suitability of the product before any alternative use.
Responsible Provider
Mikon Mineralienkontor GmbH Steinslieth 11 D-37130 Gleichen OT Klein Lengden
