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Key facts
Dalnegorsk chalcopyrite is one of the modern classics of the sulfide-collector world: not merely brassy accessory specks in a lead-zinc ore, but sharp, architectural crystals with a personality all their own. The district is better known to many collectors for galena, sphalerite, pyrrhotite, fluorite, calcite, quartz, datolite, ilvaite, and hedenbergite, yet chalcopyrite from here deserves separate attention because it appears in bold three-dimensional forms, often as pseudotetrahedral crystals and complex twins, and because the best pieces show a distinctly Dalnegorsk contrast: yellow-gold chalcopyrite set against black sphalerite, silver galena, bronze pyrrhotite, colorless to pale green fluorite, and white calcite.

Photo: Wikimedia Commons
The locality sits in the Russian Far East, in Primorsky Krai, within the broader Dalnegorsk ore district of the Sikhote-Alin region. The important chalcopyrite-bearing specimens come chiefly from the districtâs lead-zinc-silver skarn-polymetallic systems, especially Nikolaevskiy, 2nd Sovetskii, Verkhnii, and related workings. These deposits developed where carbonate blocks and limestone units were invaded and altered by Cretaceous to Paleogene magmatic and hydrothermal systems, producing skarns, sulfide ores, veins, and large mineralized cavities. Those open spaces are the secret behind the localityâs superb cabinet pieces: crystals had room to grow.

Photo: Wikimedia Commons
Dalnegorsk chalcopyrite is collectible for two different reasons. First, as a primary species, it can be large and impressively crystallized: crystals to several centimeters are known, and the district is specifically recorded for pseudotetrahedral and complex twinned chalcopyrites. Second, as an association mineral, it completes some of the most desirable Dalnegorsk combination specimens. A specimen with galena, sphalerite, pyrrhotite, fluorite, quartz, calcite, and chalcopyrite can read almost like a compact geological cross-section of the deposit: skarn silicates, open-space gangue, and ore sulfides all present in one sculptural object.ã³ã¬ã¯ã¿ãŒã¯ãæ¹è§£ç³ãæåãªéäºéé±ãé»éé±ã«èŠèŠçã«å§åãããŠããªãæšæ¬ãããæ¢ããŸããæè¯ã®äŸã¯ã巚倧ãªç¡«åç©ã«åãããããšãªããèŠçã« perched ãããå€ç«ãããã·ã£ãŒãã§å æ²¢ã®ããçµæ¶ã瀺ããŸããæ°é®®ãªãã©ã¹è²ã®é»è²ã奜ãŸããŸããããã«ããŽã«ã¹ã¯ç£ã®æšæ¬ã¯ç°è²ããã£ããé metal çãããã³ãºè²ããŸãã¯è¹è²ã®è¡šé¢è²èª¿ã瀺ãããšããããŸãããã®æ§ããã§éå±çãªç°âéè²ã®èŠãç®ã¯ã圢ãéãå æ²¢ã匷ãå Žåã«ã¯æ¬ é¥ã§ã¯ãªããç¹ã«ãã§ã«ã³ãã¡ã³ãµã€ããé»è²ã®é«éç³»ã¹ãã¥ã³ã©ã€ããšå¯Ÿæ¯ããæšæ¬ã§ããã®ç£å°ç¬ç¹ã®ç¹åŸŽã®äžéšã§ãã## Featured Specimens
Search for specimens: View all chalcopyrite specimens from Dalnegorsk, Russia
Dalnegorsk is not a single mine locality in the collectorâs sense, but a mineral district centered on a long-lived mining town. Older labels may read Tetyukhe, Tetjuche, Tjetjuche, Primorskiy Kray, Far-Eastern Region, Kavalerovo mining district, or simply Dalânegorsk. Modern locality work has separated many of the important occurrences, but older specimen labels are often less precise. For chalcopyrite, the most significant labels to watch are Nikolaevskiy Mine, 2nd Sovetskii Mine at the Partizanskoe Pb-Zn deposit, Verkhnii Mine, and broader Dalnegorsk district labels.
The deposit type is best understood as skarn-polymetallic mineralization, with lead-zinc-silver ores and copper-bearing sulfide phases developed in and around carbonate rocks. The company operating the district describes Nikolayevskoye, Partizanskoye, and Verkhnee as skarn-polymetallic deposits with differing ore-body configurations. The ore and collector mineralization developed in limestone skarns and related vein structures; in collector terms, this explains the repeated association of chalcopyrite with galena, sphalerite, pyrrhotite, fluorite, quartz, calcite, hedenbergite, ilvaite, and datolite.
The geologic setting is especially favorable for specimen growth. Carbonate host rocks were replaced by skarn assemblages and then cut or overprinted by sulfide-bearing fluids. Solution cavities, faults, veins, and open spaces became lined with ore and gangue minerals. In the best pockets, chalcopyrite crystallized as distinct pseudotetrahedral or twinned crystals rather than as anonymous ore grains. Some Dalnegorsk chalcopyrites occur on sphalerite matrix; others are intergrown with galena, perched among pyrrhotite blades, or scattered with quartz and calcite.
Mining history began under the old Tetyukhe name. On April 2, 1897, Julius Joseph Bryner staked a rich silver-lead-zinc deposit in the Tetyukhe, now Rudnaya, river valley and named it Verkhniy. The first 97 tons of ore were mined in 1902, and commercial development began in 1907. A mining corporation involving Bryner interests and foreign capital was established in 1909, and from 1911 to 1916 more than 100,000 tons of ore were mined from the Verkhniy mine. A concentration plant begun in 1912 produced its first lead concentrate in June 1914.ãœããšãé£éŠããã³ãã¹ããœããšãæä»£ã®é±æ¥å²ã¯ãçŸä»£ã®æšæ¬äŸçµŠãçã¿åºãããPartizanskoyeã¯1950å¹Žã«ææ¥ãéå§ãããã®é±åºã«ã¯ç¬¬2ãœããããŒé±å±±ãèšå®ããããNikolayevskoyeã¯1982å¹Žã«ææ¥ã«å ¥ãã800ã¡ãŒãã«ãè¶ ããæ·±ãã®ç«ªåã§èåã§ãããDalpolimetallã¯1991幎ãæçæãšããŠèšé²ããé±ç³ã®æ¡æéã¯1,245,000ãã³ã«éãããå瀟ã¯å°åã§ã®æŽ»åãç¶ããŠãããåææã®åºå°ã«ã¯NikolayevskoyeãPartizanskoyeãVerkhneeãMayminovskoyeãSouthernãSilinskoyeãå«ãŸããŠããã
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