Minerals
Gunnar Färber
Xanthoconite xls | St Michaelis Mine, Annaberg, Erzgebirge,Saxony / Germany; the rare Ag-As-Sulfide occurs here as thin micro crystalline aggregates of 5 mm, beside of some grey metallic Pyargyrite, red Proustite, and yellow Argentopyrite on dark violet Fluorite matrix. Old time specimens collect around 1920; |
Xenotime-(Y) xl | Zagi Mts., Hameed Abad Kafoor Dheri, Warsak Dam, Pechawar, Khyber Pakhtunkhwa / Pakistan; gemmy transparent well-terminated orange-brown prismatic single crystals of 8 mm, nice crystals; MM 19,00 |
Xocolatlite xx | Bambollita Mine, Moctezuma, Sonora / Mexico / TYP; brownish crystal aggregates of 1 mm, very rich on vugs in a Rhyolite matrix. Very good specimens of this new Tellurate; MM 48,00; KS 95,00 |
Xocolatlite xx | Bambollita Mine, Moctezuma, Sonora / Mexico / TYP; brownish crystal aggregates of 1 mm, very rich on vugs in Rhyolite matrix. Very good specimens of this rare Calcium-Manganese-tellurate; MM 28,00; KS 48,00 |
Xocolatlite xx | Bambollita Mine, Moctezuma, Sonora / Mexico / TYP; brownish crystal aggregates of 1 mm very rich on vugs in Rhyolite matrix. Very good specimens of the rare Calcium-Manganese-Tellurate; MM 28,00; KS 48,00; NS 95,00 |
I offer an extensive assessment and analysis service. I´ve own modern REM-EDX technology available, please ask for more details.
the prices relate directly to the expense of acquiring the specimens and the work (cleaning, testing, etc.) done on them. All prices include the current 7% VAT on minerals.
I give a discount with large orders only.
I accept regular bank transfer, Master, Visa cards and Paypal.
I describe the material as accurately as possible, to minimize any possible discrepancy felt on receipt. owever, if you are not satisfied with a specimen, please send it back promptly in its original condition, well packed.
Inside Germany the postage costs € 5.50; for orders of € 150 and over, I prepay shipping. Within the EU shipping costs € 8,50; shipping is free on orders over € 250. Outside the EU shipping for under 1 kg is € 8,50. For over 1 kg costs at least € 25.50 (depending on weight and the respective postal rates). All parcels are insured.
xx = crystals
(xx)= partial or intergrown crystals
X or x = single crystal
Capsel (capsule) = 0.1 to 0.5 cm
MM = micromount approx. 0.5 to 1.0 cm
KS = small piece approx. 1.5 to 4 cm;
NS = average-sized piece approx. 4 to 7 cm
HS = hand-sized piece 7 to 10 cm;
GS / MS = museum-sized pieces larger than 10 cm
xls = crystals; (xls) = partial or intergrown crystals; xl = single crystal.
Capsule= 0.1 to 0.5 cm; MM = micromounts approx. 0.5 to 1.5 cm; KS = small piece approx. 1.5 to 4 cm.
NS = average-sized piece approx. 4 to 7 cm; HS = hand-sized piece 7 to 10 cm; GS / MS = museum-sized pieces larger than 10 cm.