forge: 1.11.2-2255
furnus: 1.11.2-1.91
exparvis: exparvis-1.11-0.3.0
recipe trying to get working with pulvus
{
"inputItem": "exparvis:nuggetore_gravel_gold:1",
"outputItem": "neotech:dustgold:2",
"experience": 0.3
},
{
"inputItem": "exparvis:nuggetore_gravel_iron:1",
"outputItem": "neotech:dustiron:2",
"experience": 0.3
}

you used wrong syntax.
thats correct:

    {
        "inputItem": "exparvis:nuggetore_gravel_gold:0:1",
        "outputItem": "neotech:dustgold:0:2",
        "experience": 0.3
    },
    {
        "inputItem": "exparvis:nuggetore_gravel_iron:0:1",
        "outputItem": "neotech:dustiron:0:2",
        "experience": 0.3
    }

I would recommend this:

    {
        "inputItem": "exparvis:nuggetore_gravel_gold:0:1",
        "outputItem": "dustGold:2",
        "experience": 0.3
    },
    {
        "inputItem": "exparvis:nuggetore_gravel_iron:0:1",
        "outputItem": "dustIron:2",
        "experience": 0.3
    }

that would (probably) use dusts from this mod

I'm still a little confused on the syntax. I can't find anything that explains some of the lines. For example, why do some lines have ":0:1"? What exact information is needed after the item ID's?

Thank you,
Darkosto

modid:itemname:metadata:amount
-1 for any metadata.
for oredict names metadata is not necessary

Got it! Thank you!!