U–Pb dating of gem-quality vanadium-bearing grossular garnet (var. tsavorite) from north-eastern Tanzania

BC Hoare, SE Arden, GJ O'Sullivan - Mineralium Deposita, 2024 - Springer
The direct dating of gem-quality garnet mineralization has been extremely limited, even
though it has been known for decades that garnet may be dated by the U–Pb method. Here …

[HTML][HTML] Age Determination of Gem-Quality Green Vanadium Grossular (Var. Tsavorite) from the Neoproterozoic Metamorphic Mozambique Belt, Kenya and Tanzania

S Zhao, B Xu, Y Zhao - Crystals, 2024 - mdpi.com
Gem-quality garnets, with their high closure temperature (750–800° C), high transparency,
uniform composition, and purity, offer promising prospects for U-Pb dating. Despite decades …

[HTML][HTML] Trapiche Garnets in Chun'an, Zhejiang Province, China: New Constraints from Their Gemology, Geochemistry, and Geochronology

Y Wang, S Zhao, Y Zhao, Z Wang - Crystals, 2025 - mdpi.com
The trapiche garnet, a gemstone of unparalleled beauty, boasts a rare structure comprising
one core, six radiating arms, and a main body. The occurrence of garnet within the trapiche …

Inclusions and Spectral Characterization of Demantoid from Baluchistan, Pakistan

JY Zhang, G Li, Y Tian, F Schmitz - Crystals, 2024 - mdpi.com
Demantoid is the green variety of andradite [Ca3Fe2 (SiO4) 3], an exceptionally rare and
precious gemstone worldwide. In recent years, a small amount of gem-quality demantoid …

Mineralogy and Conditions of Formation Genesis of Aggregates of Natural and Sulfide Minerals of the Poldnevskoe Demantoid Deposit (Middle Urals)

VV Murzin, DA Varlamov, ES Karaseva… - Geology of Ore Deposits, 2023 - Springer
Polymineral aggregates of rounded shapes (“nodules”) composed of native and sulfide
minerals of Cu, Ni, Fe, Ag, and other elements from vein magnetite–calcite–chrysotile rocks …

[PDF][PDF] ЧАСТЬ 7. МЕСТОРОЖДЕНИЯ НЕРУДНОГО СЫРЬЯ

ВВ Мурзин, ДА Варламов, ЕС Карасева, АЮ Кисин - meetings.chelscience.ru
Polymineral round aggregates (“nodules”) composed of native and sulfide minerals of Cu,
Ni, Fe, Ag and other elements from vein magnetite-calcite-chrysotile rocks with jewelry …