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Search for specimens: View all feldspar specimens from Paprok, Nuristan, Afghanistan
Paprok is a gem-bearing pegmatite field in Kamdesh District, Nuristan Province, northeastern Afghanistan. The locality has also appeared in the literature and mineral trade under spellings such as Papruk Mine and Paprowk Mine. The workings lie in rugged Hindu Kush terrain south of Paprok village, in the Kéhi Dara Valley area, and the mine name is best understood as a group of workings rather than one neat, single shaft. Reported workings include Me Tunnel Madan, KAL Tunnel Madan, GUL Tunnel Madan, and Al Madan, with âmadanâ used locally for a mine or working.
The feldspar-bearing pegmatites are gem-bearing rare-metal granitic pegmatites hosted in Late Triassic slate and related metamorphic rocks. Regionally, they form part of the Nuristan rare-metal pegmatite province, where rare-element pegmatites are spatially and genetically linked to Oligocene two-mica granites of the Alingar intrusive complex. USGS compilations describe the Nuristan pegmatites as primarily LCT-family bodies, enriched in lithium, cesium, tantalum, niobium, beryllium, tin, boron, phosphorous, and fluorine. Paprok itself is listed among pegmatites with spodumene, lepidolite, albite, microcline, polychromic tourmaline, columbite-tantalite, and cassiterite.
The deposit type is therefore best described as a complex, highly fractionated LCT rare-metal and gem pegmatite system, with feldspar expressed mainly as albite, cleavelandite, and microcline. USGS summaries of the broader Paron field record spodumene-microcline-albite and spodumene-albite pegmatites, as well as spodumene-microcline-cleavelandite assemblages with pollucite and tantalite. The economic-geology literature places Paprok in a zone of spodumene dikes and related rare-metal pegmatites; the mineral-specimen trade knows the same rock bodies for gem tourmaline, beryl, spodumene, topaz, quartz, and rare species.
Mining history in this part of Afghanistan is complicated by terrain, politics, and trade routes. Soviet and Afghan geological work in the 1960s and 1970s documented many of the Nuristan rare-metal pegmatites. Western mineral collectors became much more aware of Afghan pegmatite specimens in the late twentieth century, and Paprokâs name became especially important in the 1990s and 2000s as fine elbaite, beryllonite, and rare phosphate specimens entered the international market. The feldspar from these pockets usually traveled as matrix rather than as the headline mineral, which is why many important Paprok feldspar specimens are cataloged under tourmaline, elbaite, beryl, spodumene, topaz, beryllonite, or quartz.æ¡éã¢ã¯ã»ã¹ã¯å®æãªææ¡ã§ã¯ãããŸãããåºãããªã¹ã¿ã³æé·å²©å°åã¯å±±å²³å°åž¯ã§ãé¢å³¶ãå€ããé£ããé路網ãšãã¬ã€ã«ç¶²ã«æ¯ããããŠããŸããçŸå°ãžã®ã¢ã¯ã»ã¹ã¯æŽå²çã«èãç§»åãå°å ã®é±å±±ååŒãæ²»å®äžã®é æ ®ã䌎ã£ãŠããŸãããã¢ãã¬ãã¹ã¿ã³åœå€ã®æ¡éè ã«ãšã£ãŠããããã¯ç£ç©ã¯ã»ãŒå®å šã«é±ç©ååŒãéããŠåºäŒããŸããã¢ãã¬ãã¹ã¿ã³ãšããã¹ã¿ã³ã®ãã£ãŒã©ãŒçµç±ã§èŒžåºãããæšæ¬ãæ§è¥¿æŽã³ã¬ã¯ã·ã§ã³ãã·ã§ãŒåšåº«ããªãŒã¯ã·ã§ã³çŽ æãçŸä»£ã®ãã£ãŒã©ãŒåšåº«ãªã©ã§ãã
ãããã¯ã®é¡èãªçºèŠã«ã¯ãåªçŸãªå€è²æ§ãšã¹ã€ã«çã®ãããªãšã«ãã©ã€ããéè²ã»ç·è²ã®ã€ã³ãã£ã³ã©ã€ã調ã®ãã«ããªã³ãããªãªãŠã ãå«ãã¢ãŒã¬ãã€ããã¢ã¯ã¢ããªã³ãå®ç³çŽã®ã¹ãã¹ãã¥ãŒã¡ã³ïŒç·è²ã®ããã¥ãã€ãæ§ææãã¯ã³ãã¡ã€ããå«ãïŒãã¹ã¢ãŒããŒç³è±ããããŒãºãã¬ããã©ã€ããããªãªãªãªã³ããŽã¡ãŠãªãç³ããŽã£ãŒã¿ããšãç³ããã³ããŒãµã€ããããããã·ã«ãã«ãã©ã€ãããã¿ã©ã€ãããã«ã·ã¥ãµã€ãããããŠãã€ã¯ãã©ã€ãæé±ç©ãå«ã¿ãŸããèŠèŠçã«æãå°è±¡çãªçµæã®å€ãã§ã¯ãé·ç³ãçœè²ã§æ¿ç¶ãããããæ çµã¿ãšãªã£ãŠãã®ç£å°ãçŽã¡ã«èå¥å¯èœã«ããŠããŸãã## Paprok, Nuristan, Afghanistan ã®æ£é·ç³ã®ç¹æ§
Paprokã®æ£é·ç³ã¯äž»ã«ã¢ã«ãããšããŠçŸããäžè¬ã«ã¯ã¯ã¬ãŒãã©ã³ãã©ã€ãå€çš®ãšããŠããããŠãã€ã¯ãã¯ã©ã€ã³ãšããŠãçŸããŸããã¢ã«ããã®çµæåŒã¯ NaAlSi3O8ããã€ã¯ãã¯ã©ã€ã³ã¯ KAlSi3O8 ã§ãããã£ããããæšæ¬ã§ã¯ãã¢ã«ããã¯éåžžçœè²ããã¯ãªãŒã è²ã§ãæ¿ç¶ãåç¶ããã©ç¶ãæç¶ãå±€ç¶ã®éåäœã圢æããŸãããããã®ã¯ã¬ãŒãã©ã³ãã©ã€ãå¡ã¯ãã«ããªã³ãå·»ãã€ããããæšæ¬ã®åºéšã«æ²¿ã£ãŠèµ°ã£ãããç³è±ãã¹ããŠã ãããããŒãºãããªã«ã®ããã®éæŸçã§éªã®å·£ã®ãããªæ§é ãäœã£ããããŸããæãé åçãªäŸã¯ãã·ã£ãŒããªèçç¶ã®è³ªæã现ããªèŒããå·ã®ãªãæ°é®®ãªè¡šé¢ãåããŠããŸãã
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ãããã£ãŠãæé«å質ã®ãããã¯é·ç³æšæ¬ã¯å¿ ãããæå€§ã§ãããšã¯éããªããå®ç§ã«æ°é®®ãªã¯ãªã¢ãŽã§ã©ã³ãã€ãã®å°ããªããŒãããšå®ç³ç¶ã®ãã³ã¯-ã°ãªãŒã³ã®ãšã«ãç³ã¯ãç ããé·ç³ã修埩ãããçµæ¶ãæã€ããããããæãŸããå ŽåããããäžçŽã³ã¬ã¯ã¿ãŒã«ãšã£ãŠããããã¯é·ç³ã¯ãããªãã¯ã¹å質ã®ç ç©¶ã§ããïŒçœãã¢ã«ããã¯æšæ¬ãäžçã¯ã©ã¹ã®ãã°ãã¿ã€ãçµæãžãšé«ããããéãã«ãã¹ãŠã®æ¬ çãä¿®åŸ©ãæ°ãŸããæ¥è§Šãé²åãããã## Collector Notes
Paprok feldspar is most often collected as part of combination specimens, and that has consequences for both authenticity and value. A specimen labeled âfeldspar from Paprokâ should normally be examined as an albite, cleavelandite, or microcline combination piece, not as a generic feldspar crystal. The strongest locality indicators are the total assemblage: white cleavelandite with Paprok-style elbaite, lepidolite, smoky quartz, topaz, spodumene, beryl, or rare pegmatite minerals.
Specific, well-documented feldspar fakes from Paprok are not prominent in the published mineralogical record. The more realistic concern is specimen construction, repair, and restoration. Afghan and Pakistan pegmatite matrix specimens are often pocket-broken, and tourmaline crystals may detach from feldspar or quartz during extraction. Reattachments, rebuilt matrix contacts, and repaired terminations are therefore common enough that serious collectors should assume they need to inspect carefully. Dealer descriptions of Paprok and Paprok-area tourmaline-on-albite pieces sometimes disclose repairs, restored tips, or uncertainty about whether termination bevels have been modified.
Look especially at the contact between colored crystals and the cleavelandite base. Glue seams may appear as unnaturally glossy lines, dark wet-looking cracks, dust-free gaps, or slight misalignment between a crystal and the pocket texture. Under longwave UV, some adhesives fluoresce. Under magnification, watch for feldspar chips stuck into glue, powdered feldspar used as fill, or contacts that lack the small intergrown albite blades expected from natural growth. A repaired tourmaline on original feldspar matrix may still be highly collectible, but it must be priced and described accordingly.
Condition problems in the feldspar itself are common. Albite cleavelandite has perfect cleavage and a thin bladed habit, so it bruises easily. Even gentle shipping can snap blade edges or shed small plates. Microcline is tougher in bulk but still has feldspar cleavage; damaged corners, cleaved faces, and abrasions on exposed terminations are frequent. White feldspar also shows dirt and iron staining readily. Cleaning should be conservative: soft brush, distilled water when appropriate, and avoidance of ultrasonic cleaners, steam, thermal shock, or aggressive chemical treatment, especially when the specimen also carries tourmaline, lepidolite, beryl, spodumene, topaz, phosphates, or repaired contacts.åžå°æ§ã¯æ°ãã察象ã«ãã£ãŠå€ãããååŒã§äžè¬çãªã®ã¯ããããã¯æé·ç³ãããªã¯ã¹ã®å°ããªæ¬ çã§ãå€ãã®ãã«ããªã³ããã°ãã¿ã€ãæšæ¬ã«ã¯é·ç³ãå«ãŸããŠããããã§ããã dominant visual elementïŒèŠèŠçèŠçŽ ã®äž»åœ¹ïŒãšããŠã®ãå·ã®å°ãªãçŸèŠ³ã®æž ããããã¯ã¬ã€ãŽã¡ã©ã³ãç³ïŒcleavelanditeïŒã¯ã¯ããã«åžå°ã§ãããé©åã«åœ¢æããå±ç€ºå質ã®ãããã¯çµæ¶ãšãããã«ä»éãããã«ããªã³ãšã¯ã¬ãŽã¡ã©ã³ãç³ãå«ã埮æ¶é·ç³ã¯ãåçŽãªãã«ããªã³ã»ãªã³ã»ãã¯ã€ããããªã¯ã¹ã®ç³çãããããªãçãããäžè¬çã§ã¯ãªãã倧ããã修埩ãããŠãããã圫å»çãªæšæ¬ã§æ°é®®ãªé·ç³ãšå®ç³å質ã®çµæ¶ãåãããã®ã¯ã¬ã¢ãã€é«äŸ¡ã§ããã
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Mindat â Paprokããã®ã¯ãªãŒãŽã¡ã©ã³ãç³ïŒCleavelanditeïŒ â Paprokã«ãããalbite var. cleavelandite ã®ç£åºèšé²ãåçããŒã¿ããèšé²ãããé¢é£é±ç©ãå«ãã
Mindat MinID 1KM-54Y â åŸ®æ§æ¶é·ç³ïŒãã€ã¯ãã¯ã©ã€ã³ïŒããã«ããªã³ããšã«ãã©ã€ããã¬ããã©ã€ããã¢ãªãç³ãã¯ãªãŒãŽã¡ã©ã³ãç³ â ã¢ã¯ãµã€ Paprokãã£ããããæšæ¬ã«ã¯ã埮æé·ç³ãã¢ã«ãããã¯ãªãŒãŽã¡ã©ã³ãç³ãã¬ããã©ã€ããè€æ°ã®ãã«ããªã³ãå«ãŸããé«çŽ Paprokãããªãã¯ã¹çã«ãããé·ç³ã®åœ¹å²ãçè§£ããã®ã«æçšã
Orris, G.J., and Bliss, J.D. (2002), Mines and Mineral Occurrences of Afghanistan, USGS Open-File Report 02-110 â Paprokã®albiteãcleavelanditeãããªã«ãã¹ãããã³ããããŒãºãã¬ããã©ã€ãããã«ããªã³ãªã©é¢é£ããç£åºãåºç€ã¥ããUSGSã®ç·èЧã
Cocker, M.D. (2011), âChapter 24A. Summary for the Mineral Information Package for the Nuristan Rare-Metal Pegmatite Area of Interest,â USGS Open-File Report 2011-1204 â Nuristanã®ã¬ã¢ã¡ã¿ã«ãã°ãã¿ã€ãã®å°åçµ±åãPaprokå°åã®å°è³ªãLCTåé¡ãé·ç³ãå«ãéåäœãã¢ã¯ã»ã¹åé¡ã詳述ã
Lyckberg, P. (2011), âEdelstein-Pegmatite in Afghanistan: Paprok,â Mineralien-Welt, 22(3), 46â57 â Paprokã«çŠç¹ãåœãŠãå°è³ªå²ãå®ç³ãã«ããªã³ãåžå°é±ç©ã®èšäºã
Lyckberg, P. (2017), âGem pegmatites of northeastern Afghanistan,â The Mineralogical Record, 48(5), 610â675 â åæ±ã¢ãã¬ãã¹ã¿ã³ã®å®ç³ãã°ãã¿ã€ãã®å€§èŠæš¡èª¿æ»ãPaprokã®ããããã·ã«ãã«ãã«ç³ïŒããããã·ã«ãã«ãã«ç³ïŒãšåºç¯ãªãã°ãã¿ã€ãæèãMindatãåŒçšã
Natkaniec-Nowak, L., DumaÅska-SÅowik, M., and Ertl, A. (2009), âWatermelon tourmaline from the Paprok mine (Nuristan, Afghanistan),â Neues Jahrbuch fÃŒr Mineralogie â Abhandlungen, 186(2), 185â193 â Paprokã®ã¹ã€ã«ç¶ãã«ããªã³ã®å垯ãšé±ç©å å«ç©ã®ç§åŠçç ç©¶ã
ãŠã£ãŒã³å€§åŠã®Ertl, DumaÅska-SÅowik, ããã³ Natkaniec-Nowak ã®2009幎ã®èšé² â Paprokã®ã¹ã€ã«ç¶ãã«ããªã³ç ç©¶ã®èŠæšãå«ãæç®ããŒãžã
BaDAP AGHã®âWatermelon tourmaline from the Paprok mineâèšé² â 2009幎 Neues Jahrbuch ã®è«æã®å¥ã®æžèªèšé²ãããŒã¯ãŒããšDOIãå«ãã
DumaÅska-SÅowik, M. ã»ã (2011), âA Raman microspectroscopic study of organic inclusions in âwatermelonâ tourmaline from the Paprok mine,â , 57(2), 248â253 â 53 mmã62.82 g ã® Paprok ãŠã©ãŒã¿ãŒã¡ãã³åãã«ããªã³çµæ¶ã®ã©ãã³ç ç©¶ãPaprokã®å®ç³ãã°ãã¿ã€ãã®ç§åŠçæèã«ãšã£ãŠäŸ¡å€ãããã
Bariand, P., and Poullen, J.F. (1978), âThe Pegmatites of Laghman, Nuristan, Afghanistan,â reprinted by Pala International â ã¢ãã¬ãã¹ã¿ã³ã®ãã°ãã¿ã€ããå°è³ªãã¢ã¯ã»ã¹ãå®ç³ã»é±ç©çç£ã«é¢ãããThe Mineralogical Recordãã®å€å žçå°åèšäºã## Videos & Media
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