 | | Journal (article/letter/editorial) | | October 2017 Gem pegmatites of northeastern Afghanistan pg 610-675. Main article in Special Issue of...SEPTEMBER-OCTOBER 2017 Gem pegmatites of Northeastern Afghanistan By Peter Lyckberg Contents Introduction.......Parun Pegmatite Field ......................... 656 Kunar Province ......................................... Frontispiece. Map of Afghanistan and surrounding area in 1887. The pegmatite areas north of the Kunar River—red...September–October, 2017 Gem Pegmatites of Northeastern Afghanistan Peter Lyckberg B.P. 2785 L-1027 Luxembourg lyckberg@pt |  | | Journal (issue) | | SEPTEMBER–OCTOBER 2017 Gem pegmatites of Northeastern Afghanistan By Peter Lyckberg Contents Introduction ......Pegmatite Field ............................656 Kunar Province ......................................... Frontispiece. Map of Afghanistan and surrounding area in 1887. The pegmatite areas north of the Kunar River—red...September–October, 2017 Gem Pegmatites of Northeastern Afghanistan Peter Lyckberg B.P. 2785 L-1027 Luxembourg lyckberg@pt...pegmatites in the mountains of northeastern Afghanistan have been producing some of the world’s finest |  | | Journal (issue) | | 25 Tom & Melissa Campbell Fluorapatite on tantalite-(Fe), 6 cm, from the Shigar Valley, Skardu, Gilgit-Baltistan...Campbell Petalite, 7.5 cm, from Paprok, Nuristan, Afghanistan. Ex Richard Gaines, Martin Zinn, and John White...quartz, 13.2 cm, from Paprok, Kamdesh, Nuristan, Afghanistan. Beth Van Allen photo. Ludlamite with childrenite...and elbaite, 6.6 cm, from Paprok, Nuristan, Afghanistan. Joe Budd photo. Supplement to The Mineralogical...(“The Big Dipper”), 16 cm, from Badakhshan, Afghanistan. Riley Owen photo. 120 Supplement to The Mineralogical |  | | Journal (issue) | | sapphires|Pink spinel from Mozambique|Tantalite(Mn) from Afghanistan|Coral branch ‘pearl’ from a giant clam|Quartz...showed major amounts of Al, as well as traces of Fe, Mn and Mg, consistent with O’Donoghue’s (2006) observation...93. Tantalite-(Mn) from Grangal, Nuristan, Afghanistan Manganotantalite—renamed tantalite-(Mn) according...pegmatites at Grangal and Watala in Kunar Province, Nuristan, Afghanistan. Although complete crystals are...their carat weight. Two faceted samples of tantalite-(Mn) were characterized by one of the authors ( |  | | Journal (issue) | | zeolites (laumontite, stilbite), fluorapatite, axinite-(Mn) and pollucite. In some cavities measuring a meter...observations by the authors) Axinite-(Mn) Ca2Mn21Al2BO(OH)(Si2O7)2 Axinite-(Mn) has been found only in the Sosedka...Most of the miarolitic pockets containing axinite-(Mn) lack Li-Al tourmaline, with the exception of retrograde...Axinite pockets may also contain dark, corroded, Mn-Li-Al tourmaline and colorless to pale pink beryl...beryl crystals to 3 cm, associated with axinite-(Mn), laumontite and green tourmaline. Later, between |  | | Book (edition) | | Germany. EJM 18, 793-801,2006. Almeidaite PbZni(Mn, Y)(Ti,FeJ+)18O37(OH,O) (4.C, crichtonite group)...yellow-orange, ruby red. With fianelite in synsedimentary Fe-Mn ore deposit of the Fianel mine, Val Ferrera, raubtinden...Arisile-(Ce/La), x 1111111,Aris quany, Namibia Ardennite-(V) Mn 42+[AliAl,Mg)][(OH) 6 l(V5\Si)O4l(SiO4)2ISi3O10]...KNa5 CaFe 13z+Al[(OHhlPOlOH)l(PO4) 11] Arganditc Mn/+[(OH) 4l(VO4,AsO4)h (8.B, flinkite group). Monoclinic...group). Monoclinic, C2/c, a,b,c = Askagenite-~ d) (Mn 2+,Fe-J(Nd,Ce)Al 2Fe 3+[01(0H)l(Si0 4)l(Si201)] 16 |
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Dara-e-Pech pegmatite field, Dara-e-Pech District, Kunar, Afghanistan