Philipsbornite xls; Grandview Mine; Grand Canyon, AZ, USA; Min; 1 piece
Philipsbornite crystals from the Grandview Mine, Grand Canyon, AZ, USA – miniature specimen
This miniature specimen shows Philipsbornite crystals from the Grandview Mine, Grand Canyon, Arizona, USA. The surface is covered with intensely lemon yellow to ochre yellow crystal aggregates developed in crust like, finely porous structures. The crystals form dense, relief like coatings with a granular texture and a matte to slightly silky surface. Occasional darker inclusions appear between the yellow areas and create subtle contrasts. The cohesive coloration and compact development give the specimen a clear and distinctive appearance.
Geology & Origin
The Grandview Mine in the Grand Canyon area is an important locality for secondary arsenates within oxidized copper deposits. Philipsbornite forms here in the oxidation zone through the reaction of lead bearing solutions with arsenic rich components under strongly oxidizing conditions. The complex geochemical processes within the sandstone sequences of the Colorado Plateau led to the formation of numerous intensely colored secondary minerals characteristic of this locality.
Picture shows sample! Item may differ in size, shape and colour from the sample images.
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
Email: info@mikon-online.com
| shipment-weight, NOT netto weight (kg) | 0.080000 |
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