Noun:

মত্স্যবিশেষ,

hardrock's Usage Examples:

often resulted in discovery of hardrock gold deposits when the placers are traced to their sources.

Prospectors for hardrock, or lode gold deposits, can.

Canadian maple, often referred to as "Canadian hardrock maple", is prized for pool cues, especially the shafts.

hardrock.

Congressional supporters of western miners tacked legislation legalizing lode (hardrock) mining on public land onto a law regarding ditch and canal rights in California.

Crib lighthouses were built extensively in the Great Lakes region, as the hardrock bottoms of these water bodies provided ideal foundations.

the Blues with Réjane Magloire (Technotronic) and Beverly Jo Scott, and hardrock band Steelover with Rudy Lenners (known from German rockband (the) Scorpions).