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*åç: Wikimedia Commons*åéå®¶ã¯äœããæ¬¡ã®äžç¹ãéèŠããŸãïŒåœ«å»çãªç©ç¶åœ¢ãå·ã®ãªãæ»ããã§çç å æ²¢ã®ãã衚é¢ããããŠãããªãã¯ã¹äžã®è¯ãé 眮ãç³è±ã®äžã«ã²ãšã€ã®æž æœãªè¶çµã³ãä¹ã£ããã®ã¯ãå·ãã çµæ¶ãæ··åšããç¿ãããæãŸãããšãããããšããããŸããæç¶ãã±ããããã®å€§ããªç©ç¶çµæ¶ã¯ç¹ã«éèŠã§ãæã察称çãªè¶çµã³ã¯æ¥åãã±ããææãšåŒ·ãçµã³ã€ããŠããŸããProspect Parkç£ã®åžå°ãªæ·¡ç·è²ã®ã¹ãã£ã«ãã€ãã¯ãæŽå²çã«å ±åãããã¯ãã©ã€ãæé±ç©ã®å«æç©ã«èµ·å ãããšãããŠãããåœå°ãããç¥ãåéå®¶ã«ãšã£ãŠã¯å°éã®äºçš®ã§ãã## Featured Specimens
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Prospect Park Quarry ã¯ãFirst Watchung Mountain ã圢æããçæŠå²©è³ªã® trap-rock ç ç³æ¡æå Žã§ãã Orange Mountain Basalt ã®äžéšã«äœçœ®ããŠãããæ¡æå Žã¯æŽå²çã« SowerbuttãVandermadeãWarren BrothersãTilcon ã®åãšãé¢é£ä»ããããŠããããçã®é±ç©åéå®¶ã¯äžè¬ã«åã« Prospect Park ãšããŠç¥ãããŠãããèšé²äžã®åº§æšã¯ãã¥ãŒãžã£ãŒãžãŒå·ãã»ã€ã¯é¡ããã¹ãã¯ãããŒã¯ã®è¿ãã«äœçœ®ããå€å žç Paterson trap-rock åéå°åºã«éåžžã«è¿ãã
æ¡æå Žã¯ 1901 幎㫠James A. Sowerbutt ã®äžã§éèšãããã1916 幎㮠Sowerbutt æ»å»åŸãææ¥ã¯æ¯åã®çŸ©çã®ç¶ Abraham Vandermadeããã㊠James Vandermade ã«åŒãç¶ããããWarren Brothers 㯠1969 幎ã«ååŸããTilcon New Jersey ã¯åŸã« 1980 幎代åé ã«æ¡æå Žãè²·åãããé·ãéçç£çãªç ç³äœæ¥ãç¶ããæ°ããçæŠå²©ãšæ°ãããã±ãããé²åºãããé·å¹Žã«ãããã³ã¬ã¯ã¿ãŒã«äŸçµŠãããããçŸåšã¯ééã»åéçºãŸãã¯ååæžã¿ã®å°ãšããŠååšããŠãããç©æ¥µçãªæ¡éå°ç¹ã§ã¯ãªãã2021 幎ãŸã§ã«çºã®èšç»ææžã¯æ¡æã®åæ¢ãååã®é²è¡ãæ¡æå Žè·¡å°ã®åéçºèšç»ã®æ¡æã瀺ããŠããã






å°è³ªçã«ã¯ãæ¡æå Žã¯ calcic plagioclase ãš clinopyroxene ã«æ¯é ããã dark greenish-gray ãã greenish-black ã® Orange Mountain Basalt ãé²åºããããå°å±€ã¯è€æ°ã®æµãããæããäžéšã«ã¯å€§èŠæš¡ã§æ±ç¶ã®çæŠå²©ãäžéšã«ã¯æ°æ³¡ãå«ãããããšããã ãäžç«¯æµã®äžéšã«ã¯ pillow æ§é ãäžäœã®æµãã«ã¯ pahoehoe æ§é ãèªãããããProspect Park ã®é±ç©è³æºã¯ããããã®éæŸç©ºéæ§é ã«çµã³ã€ããŠããã Stilbiteãç³è±ãæ¹è§£ç³ãããªã³ãã€ããã©ãŠã¢ã³ãµã€ãããã¥ã©ã³ãã€ããããã©ã€ããããã³ãã³ç³ãã¢ããã£ã©ã€ã矀ã®é±ç©ãããã³é¢é£çš®ã¯ã溶岩ãååã«å·åŽãããŠå°äžã埪ç°ããé±åæµäœããŒãªã©ã€ããšé¢é£ããçªé žå¡©ãæ²çãããåŸã®çæŠå²©ã®ç©ºæŽå ã«çµæ¶åããã
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Prospect Park stilbite 㯠best known as stilbite-Ca, NaCa4(Si27Al9)O72·28H2O ãšããŠç¥ãããŠããŸãããå€ãã©ãã«ã«ã¯ãã°ãã°åã«ãstilbiteããšèšãããŠããŸããææã¡æšæ¬ã§ã¯ãå€å žçãªåœ¢æ ã¯ã·ãŒ ãã¹ç¶ããã¡ã³ç¶ã bow-tiesãçµæ¶ã®éããã¬ãŒãã®æŸå°ç¶æã§ãããã¬ãŒãã¯ç©ç©ã®ç©ã®ããã«å€åŽãžéããäžžã¿ã垯ã³ãã·ã«ããŒãªç«¯éšãæã€ããšãããã°ãå¯éããæå察㮠bow-tie ã圢æããããšããããŸããåã ã®çµæ¶ã¯åéæã§ãæè¯ã®æšæ¬ã¯åŽå ãåœãŠããšçç å æ²¢ããã·ã«ããŒå æ²¢ãžãšæãããªãããšããããŸãã
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å質ã¯åœ¢æã第äžã«è©äŸ¡ããŸããProspect Park stilbite ã¯èªã¿åãå¯èœãªå¹ŸäœåŠãæããã¹ãã§ãïŒãã¡ã³ãbow-tieãwheat sheafããŸãã¯æŸå°ç¶ã®ççºã®ããããã§ããã ã®å·ãã éåäœã§ã¯ãããŸãããå æ²¢ã¯ç¬¬äºã§ãã·ã«ããŒãçç å æ²¢ãåå°æ§ã®é«ããã¬ãŒãã¯ãéã衚é¢ãç ç³ã®ãããªè¡šé¢ããåªããŠããŸããè²ã¯ç¬¬äžã§ãæããã¿ã³è²ããé»éè€è²ãçšã«ç·ãèŠèŠçã«ç®ç«ã¡ãŸããæåŸã«ãåºè³ªãšå ±çãéåžžã«éèŠã§ãã ã¯ã©ãŒãäžã®äžã€ã®ã·ã£ãŒã㪠bow-tie ã stilbiteâããã©ã€ãã®ãã©ã³ã¹ã®åããçµã¿åããã¯ãç£å°ã®ç¹åŸŽããªãåç¬ã®å¡ãããã¯ããã«ã³ã¬ã¯ã·ã§ã³äŸ¡å€ãé«ããªããŸãã## Collector Notes
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