Minerals Word Search — Hard

Play a free online Minerals word search puzzle. Difficulty: Hard. Find all 12 hidden words on the 12×12 grid below.

Words to find

Plus 4 hidden bonus words.

Minerals word list, defined

CHERT /tʃɜːrt/ · noun
A hard, dense, fine-grained sedimentary rock composed chiefly of microcrystalline quartz, occurring as nodules or layered beds, especially in limestone and chalk. Related: flint, chert nodule (no), hornstone, novaculite.
NIOBIUM /ˈnaɪ.ə.bi.əm/ · noun
A chemical element with the symbol Nb and atomic number 41. It is a soft, grey, blue-white, lustrous, ductile, and heat-resistant transition metal. Related: tantalum, molybdenum, tungsten, chromium.
GALLIUM /ˈɡæliəm/ · noun
Gallium is a soft, silvery-blue metallic chemical element (symbol Ga, atomic number 31) notable for its very low melting point of about 29.8 °C, just above room temperature. It is used chiefly in semiconductors, notably gallium arsenide and gallium nitride.
TUFF /tʌf/ · noun
A type of volcanic rock, often used in construction, or a person who is clumsy or awkward. Related: clumsy, awkward, lumbering, uncoordinated.
COAL /kəʊl/ (British), /koʊl/ (US) · noun
A hard black substance consisting largely of carbon, formed from the fossilized remains of plants over millions of years and burned as fuel. It also refers to an individual piece of this substance. Related: anthracite, bitumen, char, carbon.
FLINT /flɪnt/ · noun
A very hard, grey stone (a form of silica/chert) that breaks with a sharp edge and produces sparks when struck against steel; historically prized for making tools and starting fires. Related: chert.
BRONZE /brɒnz/ · noun, verb, adjective
A reddish-brown alloy of copper, usually with tin, used historically and today for sculpture, tools, and ornaments; also a similar reddish-brown colour. Related: copper alloy, statuary metal, tan, russet.

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