Guess which tiny ASX mining share just rocketed 45% on new copper and gold finds

You won't hear investors in this tiny ASX mining share complaining today.

While the All Ordinaries Index (ASX: XAO) is waffling between small gains and small losses, this ASX mining share rocketed 45% on open this morning.

Any guesses?

If you said Tennant Minerals Ltd (ASX: TMS), go to the front of the class.

In afternoon trading, Tennant Minerals has given back some of its earlier eye-popping gains but remains up a healthy 15.4%.

So, what's piquing investor interest?

Bonanza copper and gold intersections

The Tennant Minerals share price is rocketing after the ASX mining share reported that assay results returned a thick intersection of high-grade copper and gold.

The results come from the first hole of its recently completed six-hole diamond drilling program at the Bluebird copper-gold discovery, located within Tennant's 100% owned Barkly Project in the Northern Territory.

Assay results are still due in for the other five drill holes. The miner said all of the holes had intersected thick hematite alteration and copper mineralisation.

Commenting on the results driving the ASX mining share higher today, Tennant Minerals chairman, Matthew Driscoll said:

The latest drilling results from Bluebird are stunning. Not only have we continued to intersect thick, high-grade copper, but we have also discovered a distinct high-grade gold shoot within the broader mineralised zone with spectacular intersection grades of up to 38.5 grams per tonne gold.

We have really only scratched the surface at Bluebird, with the copper-gold discovery zone still completely open to the west and below 200 metres depth.

The miner is currently defining new drilling targets along a 5 kilometre corridor to "continue building and expanding this significant new high-grade copper-gold discovery", Driscoll added.

How has this ASX mining share been tracking?

The Tenant Minerals share price is subject to some big ups and downs.

With more ups than downs, the ASX mining share has gained 50% over the past 12 months. That compares to a full-year loss of 5% posted by the All Ordinaries.