Apatite, Dravite–Schorl xls; Panasqueira, Portugal; Gerd Tremmel collection; Cab; unique piece

$60.95
Only 1 left
Item number
A1026147

Apatite and Dravite–Schorl crystals from Panasqueira, Portugal, Gerd Tremmel collection – cabinet specimen as unique piece

 

 This cabinet specimen features well-developed Apatite crystals in striking association with Dravite-Schorl crystals from the renowned Panasqueira locality in Portugal, from the Gerd Tremmel collection. The Apatite crystals display strong, well-defined forms with a vitreous luster and are accompanied by dark, prismatic Dravite-Schorl crystals, creating a highly attractive mineralogical contrast. The dense and multi-layered crystal intergrowth gives the specimen a lively structure and clearly emphasizes the crystalline character of this classic paragenesis.

Geology & Origin

The Panasqueira mine is one of the world’s most important hydrothermal tin and tungsten deposits. Apatite and Dravite-Schorl form here in complex parageneses within steeply dipping veins influenced by granitic intrusions. The locality is internationally recognized for its diverse and exceptionally well-developed crystal formations and has produced outstanding collector specimens of high mineralogical and aesthetic value for decades.

 

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

More Information
shipment-weight, NOT netto weight (kg) 0.500000

© 2021 shannonsminerals.com