Granite (Weathered/Oxidized)
Phaneritic Felsic Igneous Rock (composed of Quartz, Orthoclase Feldspar, and Mica)
igneous
Category
Sedimentary (Secondary Classification For A Weathered Mineral Specimen)
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Granite
Granite (Felsic Plutonic Rock)
igneous
Ocean Jasper
Orbicular Jasper/Microcrystalline Quartz (SiO2)
sedimentary
Orange Quartzite / Carnelian Agate
Silicon Dioxide (SiO2)
metamorphic
Quartz with Iron Staining
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Sandstone
Arenite (SiO2 based with various mineral cements)
sedimentary
Calcite
Calcium Carbonate (CaCO3)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Basalt with Quartz/Calcite Vein
Basalt (Mafic Volcanic Rock with secondary mineralization)
igneous
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Chert/Quartzite variant)
Silicon Dioxide (SiO2)
mineral
Breciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
sedimentary
Native Copper
Native Copper (Cu)
mineral
Quartz Pebble (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Porphyritic Basalt (with Pyrolusite or Iron-oxide staining)
Porphyritic Basalt (Mafic Extrusive)
igneous
Limonite-stained Quartzite
Quartzite with Limonite (FeO(OH)·nH2O) staining
metamorphic
Granite Cobble
Granite (Phaneritic Quartz-Feldspar Felsic Rock)
igneous
Gastly (Trick or Trade Halloween Series)
Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)
Mineral (Synthetic - Paper and Ink Polymorph)
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Ironstone Concretion
Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Sandstone (likely Ferruginous)
Arenite (SiO2 with iron oxide impurities)
sedimentary
Limonite (Iron Ore)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
mineral理论上属于沉积成因
Gold Nugget
Native Gold (Au)
mineral
Limonite (Ochreous)
FeO(OH)·nH2O (Hydrated Iron Oxide)
mineral
Granite Cobble
Phaneritic Felsic Igneous Rock
igneous
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
mineral
Ironstone Concretion
Ironstone (Limonite/Goethite Concretion)
sedimentary
Graywacke with Quartz Vein
Lithic Sandstone (Graywacke)
sedimentary
Granite Pebble
Felsic Plutonic Rock (primarily Quartz, Feldspar, and Mica)
igneous
Chert (specifically Iron-stained River Cobble)
Silicon Dioxide (SiO2)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Basalt with Jasper Veining
Basaltic Rock with Cryptocrystalline Quartz (SiO2)
igneous
Smoky Quartz
Smoky Quartz (SiO2)
mineral
Diorite with Weathering Rind
Course-grained intermediate plutonic rock (Diorite)
igneous
Porphyritic Basalt (with Amygdules)
Amygdaloidal Porphyritic Basalt
igneous
Diorite (River Pebble)
Diorite
igneous
Sandstone (likely Arkosic)
Arenite (SiO2 based)
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt
igneous
Granite or Porphyritic Igneous Rock (weathered)
Granitoid
Igneous
Quartzite
Hydrothermal Quartz or Quartzite (SiO2)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Granite (Felsic Plutonic Rock)
igneous