Tintinait

Dotazy na vzorek

1. 18.1.2021: Dotaz zákazníka

   Dobrý den, rád bych Vás požádal o informaci, zdali máte/nebo můžete zprostředkovat ještě větší formát se vzorkem tintinaitu. V kvalitě jako tento menší vzorek. Velmi děkuji za odpověď Petr Ondruš

2. 22.9.2020: Dotaz zákazníka

   Dobrý den, prosím o informaci zdali má vzorek vzhled ke své ceně a podobnosti s jinými sulfosolemi asociace certifikát alespoň z RTG analýzy. Pokud ne, zdali by byla možná sleva a možnost vzorek vrátit, v případě, že se neprokáže tintianit. Děkuji, Petr Ondruš

   • 11.11.2020: Odpověď vystavovatele

     Dobrý den, dle provedených analýz se jedná o sulfosůl pevného roztoku kobellit-tintinait. Ptal jsem se na to i Martina Śtevka, ten mi říikal, že část analýz spadá do pole tintinaitu, menší část pak do pole kobellitu. V případě, že se neprokáže tintinait, je samozřejmě možné vzorek bez náhrady vrátit. Přikládám citaci z Geolocica Caprathica, Mikuš et al. 2018: Kobellite–tintinaite (Cu, Fe)2Pb10(Sb, Bi)16S35 series N=2Sulphosalts of this series represent the most common ones in the deposit. They were found at the 6th and 10th mine levels. At the 6th mine level, tintinaite forms needle crystals up to several cm in size. It occurs in association with jamesonite (Fig. 6a), tetrahedrite, bournonite, bismuthinite and native Bi (Fig. 6b). Tintinaite represents the oldest sulphosalt. Its cleavage planes and cracks are rejuvenated by bournonite and native Bi. At the10th mine level, the kobellite is associated and intensively corroded with younger bournonite, Sb-bismuthinite and Bi-jamesonite. In general, with increasing depth, anincrease of Bi and adecrease of Sb are observed. Sb-rich members of the 6th mine level can be considered as tintinaite and Bi-rich members at the 10th mine level as kobellite (Fig. 9). Paradoxically, the highest Bi content occurs in kobellite which forms isometric grains (up to 20 μm) in tintinaite found at the 6th mine level. Antimony content in members of this series ranges between 5.84 up to 12.96 apfu. Bismuth content varies from 3.18 to 9.78 apfu. The Bi–Sb substitutional trend seems to be ideal (Fig. 9). Sb/(Sb+Bi) ratio varies from 0.37 to 0.80 (Fig. 10). Silver content is only minor (in average 0.06 apfu). Fe+Cu content in the studied phases is higher than that repor-ted for the kobellite-tintinaite series (Fe+Cu=2 apfu, Zakrzewski &Makovicky 1986). The maximum content of Cu+Fe is 3.12, 2.22 in average. Cu content in many studied samples exceeds 2 apfu (maximum 2.23). Among the minor elements, only Hg is slightly increased (up to 0.86 wt. %). Anempirical formula for tintinaite with the highest Sb content (and assuming cation substitutions) can be written as (Cu1.92Fe0.08)2 (Cu0.24Ag0.08Hg0.1 Pb9.89)(Sb12.85Bi3.16)S34.67 with chemically calculated N=1.97. Anempirical formula for kobellite with the highest Bi content can be written as (Cu1.59Fe0.41)2(Cu0.11Pb10.31Bi9.78Sb5.84)S34.90with calculated N=1.99.

   • 11.11.2020: Odpověď vystavovatele

     Tím bez náhrady jsem samozřejmě myslel bez náhrady pro prodávajícího = plné vrácení částky kupujícímu.

3. 20.4.2020: Dotaz zákazníka

   Tento dotaz je soukromý

   • 11.11.2020: Odpověď vystavovatele

     Dobrý den, dle provedených analýz se jedná o sulfosůl pevného roztoku kobellit-tintinait. Ptal jsem se na to i Martina Śtevka, ten mi říikal, že část analýz spadá do pole tintinaitu, menší část pak do pole kobellitu. V případě, že se neprokáže tintinait, je samozřejmě možné vzorek bez náhrady vrátit. Přikládám citaci z Geolocica Caprathica, Mikuš et al. 2018: Kobellite–tintinaite (Cu, Fe)2Pb10(Sb, Bi)16S35 series N=2Sulphosalts of this series represent the most common ones in the deposit. They were found at the 6th and 10th mine levels. At the 6th mine level, tintinaite forms needle crystals up to several cm in size. It occurs in association with jamesonite (Fig. 6a), tetrahedrite, bournonite, bismuthinite and native Bi (Fig. 6b). Tintinaite represents the oldest sulphosalt. Its cleavage planes and cracks are rejuvenated by bournonite and native Bi. At the10th mine level, the kobellite is associated and intensively corroded with younger bournonite, Sb-bismuthinite and Bi-jamesonite. In general, with increasing depth, anincrease of Bi and adecrease of Sb are observed. Sb-rich members of the 6th mine level can be considered as tintinaite and Bi-rich members at the 10th mine level as kobellite (Fig. 9). Paradoxically, the highest Bi content occurs in kobellite which forms isometric grains (up to 20 μm) in tintinaite found at the 6th mine level. Antimony content in members of this series ranges between 5.84 up to 12.96 apfu. Bismuth content varies from 3.18 to 9.78 apfu. The Bi–Sb substitutional trend seems to be ideal (Fig. 9). Sb/(Sb+Bi) ratio varies from 0.37 to 0.80 (Fig. 10). Silver content is only minor (in average 0.06 apfu). Fe+Cu content in the studied phases is higher than that repor-ted for the kobellite-tintinaite series (Fe+Cu=2 apfu, Zakrzewski &Makovicky 1986). The maximum content of Cu+Fe is 3.12, 2.22 in average. Cu content in many studied samples exceeds 2 apfu (maximum 2.23). Among the minor elements, only Hg is slightly increased (up to 0.86 wt. %). Anempirical formula for tintinaite with the highest Sb content (and assuming cation substitutions) can be written as (Cu1.92Fe0.08)2 (Cu0.24Ag0.08Hg0.1 Pb9.89)(Sb12.85Bi3.16)S34.67 with chemically calculated N=1.97. Anempirical formula for kobellite with the highest Bi content can be written as (Cu1.59Fe0.41)2(Cu0.11Pb10.31Bi9.78Sb5.84)S34.90with calculated N=1.99.