Αντικείμενο (πέτρωμα) uoadl:185359 171 Αναγνώσεις

Ταξινομικός αριθμός:
D15 (2)
Συστηματική ταξινόμηση:
Carbonates
Μεταφρασμένος τίτλος:
Siderite
Προέλευση:
Freiberg / Saxony, Germany
Περιβάλλον γένεσης:
Most often found in bedded sedimentary deposits with a biological component, with shales, clays and coal beds - suggesting that the siderite is biogenically created under low-oxygen and low-Ph conditions. It is also found in metamorphosed sedimentary rocks as more massively crystalline material, as a primary gangue mineral in hydrothermal deposits, and in pegmatites, including nepheline syenite pegamtites; as bog deposits.
Περιγραφή:
Most often found in bedded sedimentary deposits with a biological component, with shales, clays and coal beds - suggesting that the siderite is biogenically created under low-oxygen and low-Ph conditions. It is also found in metamorphosed sedimentary rocks as more massively crystalline material, as a primary gangue mineral in hydrothermal deposits, and in pegmatites, including nepheline syenite pegamtites; as bog deposits.
Χημικός τύπος:
FeCO3
Σύστημα κρυστάλλωσης:
Trigonal
Κρυσταλλικό σχήμα:
Hexagonal Scalenohedral

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