Mineral Composite

Fossilized Shark Tooth

Chondrichthyes (Class)

Dalmatian Stone

Dalmatian Stone (Felsic Igneous Rock)

Shark Tooth Fossil

Chondrichthyes (class) fossilized tooth

Banded gneiss

Foliated quartz–feldspar gneiss, likely granitic gneiss

Amethyst

Quartz (Silicon Dioxide, SiO2)

Gneiss

Gneiss

Vein Quartz in Basalt

Silicate-veined volcanic rock

Rough red garnet crystal

Likely almandine garnet, Fe₃Al₂(SiO₄)₃; species cannot be confirmed from the image alone

Likely garnet-bearing rock, possibly a garnet crystal in matrix

Garnet, probably almandine (Fe₃Al₂(SiO₄)₃), on a dark metamorphic host rock

Blue apatite rough

Apatite-group calcium phosphate, commonly fluorapatite (Ca₅(PO₄)₃F)

Blue Apatite

Calcium phosphate fluorapatite, Ca5(PO4)3(F,Cl,OH)

Chrysocolla on Matrix

Hydrated copper silicates ((Cu,Al)2H2Si2O5(OH)4·nH2O)

Corundum

Aluminium oxide (Al2O3)

Quartz Mineral

Silicon Dioxide (SiO2)

Dark, speckled coarse-grained rock; likely diorite

Diorite, an intrusive igneous rock composed mainly of plagioclase feldspar and hornblende or other dark minerals

Unknown Rock Fragment

Unknown

Likely garnet-bearing rock (possibly almandine garnet in matrix)

Garnet, likely almandine (Fe₃Al₂Si₃O₁₂); host rock cannot be determined from the image

Hematite

Iron(III) oxide (Fe2O3)

Limonite (Ironstone)

Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Rounded pink-gray granite pebble

Granite, a coarse-grained felsic intrusive igneous rock

Bauxite

Bauxite (Al2O3·2H2O)

Bauxite (Iron-stained Chert / Ironstone Aggregate)

Hydrous aluminum oxide mixture (mainly Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Goethite α-Fe3+O(OH))

Bauxite (Pisolitic Bauxite)

Bauxite (mixture of Hydrous Aluminum Oxides)

Given the appearance, it's likely a fragment of an igneous or metamorphic rock composed of multiple minerals. Without specific diagnostic features, it's difficult to give a common name other than 'crystalline rock fragment'. If pressed to guess based on the granular, somewhat light and dark speckled appearance, it could be a fragment of granite or a related intrusive igneous rock.

As a rock fragment, it does not have a single scientific mineral name; rather, it's a piece of a rock which is a combination of minerals. If it were granite, its main mineral composition would be quartz (SiO2), feldspar (e.g., KAlSi3O8 - orthoclase, (Na,Ca)(Al,Si)4O8 - plagioclase), and mica (e.g., KAl2(AlSi3O10)(OH)2 - muscovite or K(Mg,Fe)3AlSi3O10(OH)2 - biotite), among others.

Lapis Lazuli

Lapis Lazuli (A complex rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)

Lapis Lazuli (Raw)

Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S

Green serpentine (likely serpentinite)

Serpentine-group minerals, commonly antigorite, lizardite, and/or chrysotile; rock name: serpentinite

Green-and-white rough mineral specimen, possibly amazonite

Unconfirmed; possible amazonite, a green variety of microcline feldspar (KAlSi₃O₈)

Petrified Wood

Silicified wood (SiO2)

Mammoth Tooth

Mammuthus primigenius (Tooth fragment)

Banded gneiss pebble

Feldspar–quartz gneiss; exact mineral composition cannot be confirmed from the image

Drill Core Samples (Varied Lithology)

Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)

Fluorite and Mineral Collection

Calcium Fluoride (CaF2)

Almandine garnet crystal

Almandine, an iron-aluminum garnet; ideal formula Fe₃Al₂(SiO₄)₃

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Granite

Intrusive Igneous Rock

Pink-orange mineral fragment, likely feldspar (possibly potassium feldspar)

Likely orthoclase or microcline, KAlSi₃O₈; identification from the image is uncertain

Weathered granite (likely)

Granite, a coarse-grained felsic intrusive igneous rock composed chiefly of quartz, feldspar, and mica

Chlorite-rich schist (probable greenschist)

Greenschist-facies metabasalt or chlorite–actinolite schist

Fossil bone, possibly a large mammal long-bone fragment

Fossilized cortical bone; taxon indeterminate from the photograph