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åç: Rob Lavinsky, iRocks.com / Wikimedia Commons
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æŽå²çã«ããŽãããã«ã-ãã£ãã¢é±ç©åž¯ã¯äœäžçŽã«ããããæåã§ãããçŸä»£ã®å°è³ªäœæç®ã¯ããã®å°åã1600幎代以æ¥åœéçã«ç¥ãããŠãããšèšè¿°ãããã£ãã¢ã®è¯éºãªãéã®èèããçãã壮芳ãªé±ç©çŸè±¡ãšããŠæããããŠãããç£å°ã®è©å€ã¯ãã¹ã€ã¹ã®é·å¹Žã«ããã StrahlerïŒã¢ã«ãã¹çµæ¶ãã³ã¿ãŒïŒãã¡ã®äžä»£ãè¶ ããæŽ»åã«ãã£ãŠåŒ·åãããŠããã圌ãã®ä»äºã¯ãæ£åšããå²ãç®ãéã®åæé¢ããã³ãã«é¢é£ã®é²åºãããšãŒãããã§æãé·ãåç¶ãã cabinet specimens ã®ããã€ããžãšå€ããã## Featured Specimens
Search for specimens: View all hematite specimens from Fibbia, Switzerland
Fibbia is recorded mineralogically as Fibbia, Fontana, Airolo, Leventina, Ticino, Switzerland, and is often labeled in older collections as La Fibbia, Fibbia Mt., St. Gotthard, San Gottardo, or Gotthard-Fibbia. Those broader labels are historically understandable but should be read carefully: âSt. Gotthardâ can cover a wider mineral district, while âFibbiaâ is a more specific locality within the Airolo-Leventina part of Ticino.
The deposit type is Alpine fissure or cleft mineralization. The host terrain belongs to the crystalline Gotthard massif, where Variscan granitoids, aplites, gneisses, and hornblende-bearing schists are cut by mineralized fractures. Scientific work on the Fibbia area distinguishes several vein generations; the Alpine retrograde fissure stages formed roughly between 20 and 13 million years ago under cooling metamorphic conditions, with temperatures falling from about 420 °C to 200 °C or lower. Hematite belongs particularly to later fissure development, after major quartz and feldspar growth, in an oxidized cleft environment favorable to brilliant tabular Fe2O3.
ãã®å°åã¯é±å±±ã§ã¯ãããŸãããçç£ã¯ã¢ã«ãã¹ã®æ¡åãé²åºçŸå Žãå°éå®¶ãŸãã¯é«ãçµéšãæã€ Strahler ã®äœæ¥ããçããŸãããGotthard å°åã®éè·¯ã»ãã³ãã«å·¥äºã¯æšæ¬æ¡éã«å€§ããªåœ±é¿ãäžããŸããã FibbiaãVal TremolaãMonte ProsaãGotthard éè·¯-ãã³ãã«ã®æ¥è¿ç¹ã®çç Žã»æåã«ãã£ãŠãå ã éããŠããè£éãéãããŸããããããã® fissure ã®äžã«ã¯ hematite ã®ãã©ãã«ãã«ããã«ãªãã¿ã€ãããã¿ãã€ããã¹ãã£ã«ãã€ãããã§ãããµã€ããããžããããã³ã¯èç³ããã®ä»ã®ã¢ã«ãã¹ã®å€å žçé±ç©ãç£åºãããã®ããããŸãã
Collecting access should be treated as regulated and sensitive. The Gotthard-Fibbia mineral zone is recognized as a Swiss geotope of national importance and is explicitly described as subject to medium-to-strong tourist and mineral-collecting pressure. Ticino has rules for the search and collection of minerals, rocks, and fossils, and exceptional scientifically important finds may have reporting or surrender obligations. Anyone considering fieldwork must verify current cantonal requirements, land ownership, seasonal hazards, and protected-site restrictions before entering or disturbing a cleft.
æ¡éã¢ã¯ã»ã¹ã¯èŠå¶ãããŠãããæ©åŸ®ã«æ³šæããŠæ±ãã¹ãã§ããGotthard-Fibbia é±ç©å°åž¯ã¯ã¹ã€ã¹ã®åœå®¶çéèŠå°åœ¢ãšããŠèªå®ãããŠãããäžã匷床ã®èгå ããã³é±ç©æ¡éã®ãã¬ãã·ã£ãŒã®å¯Ÿè±¡ãšããŠæç€ºçã«èšè¿°ãããŠããŸãããã£ããŒãå·ã«ã¯é±ç©ã»å²©ç³ã»åç³ã®æ¢çŽ¢ãšæ¡åã«é¢ããèŠåããããç§åŠçã«éèŠãšãããçºèŠã«ã¯å ±åãŸãã¯è¿éã®çŸ©åãçããå ŽåããããŸããé倿޻åãæ€èšããŠãã人ã¯ãçŸè¡ã®å·èŠå®ãåå°æææš©ãå£ç¯çãªå±éºãä¿è·å°åã®å¶éãçŸå°ã«å ¥ãåã«å¿ ã確èªããŠãã ããã
Notable finds range from small thumbnail roses to major cabinet specimens. Historic accounts describe sharp hematite roses to several centimeters from road and tunnel-related exposures, a celebrated 9 cm cluster collected in 1979 by Bruno Schaub-Gottschalk at Alpe di Fieud in the Fibbia/Gotthard area, and museum-quality iron roses reaching approximately 10 cm across. Such pieces are exceptional; most Fibbia material encountered on the market is thumbnail to miniature size.
é¡èãªçºèŠã¯ãå°ããªãµã ãã€ã«ãµã€ãºã®ãã©ãã倧ããªãã£ããããçŽæšæ¬ãŸã§ããŸããŸã§ããæŽå²çèšé²ã«ã¯ãéè·¯ã»ãã³ãã«é¢é£ã®é²åºéšããæ°ã»ã³ãã¡ãŒãã«çŽã®éãããã¿ã€ãã®èèãããããšã1979幎㫠Bruno Schaub-Gottschalk ã Fibbia/Gotthard å°åã® Alpe di Fieud ã§æ¡éãã9 cm ã®çµæ¶çŸ€ãåç©é€šå質ã®çŽ10 cm çšåºŠã®éã®èèãæããããŸãããããã®æšæ¬ã¯ç¹å¥ãªãã®ã§ããåžå Žã§èŠããã Fibbia ã®ææã®å€§åã¯ãµã ãã€ã«ãããããã¥ã¢ãµã€ãºã§ãã## ãã£ãã¢ïŒã¹ã€ã¹ïŒç£ããã¿ã€ãã®ç¹åŸŽ
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åžå°æ§ã¯çžå¯Ÿçã§ããå°ããªFibbiaã®ãã©ã¯å ¥æå¯èœã§ãå¿è匷ãã³ã¬ã¯ã¿ãŒã¯æšæ¬ãåŸãããŸãããåªãããåºæ¿ã䌎ããæå·ã®ãªãæšæ¬ã¯äžè¬çã§ã¯ãããŸãããçŸåšããã³æè¿ã®åžå Žèšé²ã¯ãã®å·®ãæç¢ºã«ç€ºããŠããŸãïŒå°ããªè²©å£²äŸã¯çªå ã®ããã«èŠããçŽ æçãªãããã¥ã¢ãã¢ãã¥ã©ãŒãªã¢ãã«ãã«ãéèŠãªããããã³ã¹ã䌎ãå°åãã£ããããã¯æ°åãã«å°ååããäžé ã§è²©å£²ãããããšããããŸãã2026幎6æã«ã¯å€§ããª120 mmã®ã¢ãã¥ã©ãŒãªã¢ä»ãèµ€éç€«æšæ¬ã$12,000ã§æ²èŒããã2024幎12æã«ã¯ãžã£ãã¯ã»ãã«ããŒã³ã®åéåã®å°åãã£ããããFibbiaéã®ãã©ïŒã¢ãã¥ã©ãŒãªã¢ïŒã«ãã«ä»ãïŒã¯$1,560ã§èœæãããŸããã2019幎ã«ã¯Rock H. Currier/George Vauxã®åºå žæšæ¬ãHeritageãéã$3,500ã§è²©å£²ãããŸããããããã®äŸ¡æ Œã¯çŸç䟡å€ãšæ§ã¹ã€ã¹ã¢ã«ãã¹ç£ provenanceã«ä»éãããã¬ãã¢ã ã®åæ¹ãåæ ããŠããŸãã## Stories & Field Notes
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Heijboer, T. C. (2006). Origin and pathways of pro- and retrograde fluids, PTt paths and fluid-mineral equilibria from Alpine veins of the Central Alps: case studies of the Fibbia and Amsteg areas. å士課çšè«æãããŒãŒã«å€§åŠã â Fibbiaèç³»çæãæµäœãã¢ã«ãã¹è£é圢æã«é¢ããçŸä»£ã®äž»èŠåŠè¡ç ç©¶ã
Amacher, P. (1982). ãDie FibbiaããLapis, 7(7â8), 28â30. â Fibbia ã«ç¹åããå€å žçãã€ãèªè«æã
Amacher, P. (1982). ãStrahlen an der Fibbiaãã Lapis, 7(7â8), 31. â Fibbia ã§ã®æ¡éã«ã€ããŠã® companion èšäºã
Stalder, H. A., Wagner, A., Graeser, S., & Stuker, P. (1998). Mineralienlexikon der Schweiz. Wepf Verlag, Basel. â ã¹ã€ã¹é±ç©å°åœ¢ã®æšæºåç §ãMindat 㯠Fibbia ããã¿ã€ãå€çš®ãéã®èèãããã³é¢é£çš®ã«ã€ããŠãã®èŸå žãåŒçšããŠããã
(2005). The Mineralogical Record, Vol. 36, No. 6, NovemberâDecember 2005. â éèŠèšäºãã¢ã«ãã¹ã® âéã®ãã©âããå«ã¿ãFibbia/Gotthard ã®æèãš Bruno Schaub-Gottschalk ã® Alpe di Fieud ã®è©±ãæ²èŒã
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