If you actually get more of a mineral/element than you need it deFlags that section of the quest and it looks like you didn't complete the quest. There are more minerals in ME 1 than the requirement needed to complete the quest. If you actually played ME 1 your score will be different because in ME 1 there are collection quests (minerals, elements, insignia, etc.). GarrusVakarian (so jealous of that user name) is correct in that using the digital comic for ME and getting a lot of resources in ME 2 will give you 100 on the Mineral Resources War Asset. I've replayed Mass Effect 1 & 2 several times and imported into Mass Effect 3 several times in order to answer this.
Note sure if this will help, but my Imported Shepard from a PS3 version of ME2 (so only used the digital comic for ME) has the following (which is more than enough to get the 100 mineral war assets for ME3): Are you referring to the War Asset you gained when importing Shep from ME2? Oct. Not 100% sure what you're referring to here. There is a way to increase military strength for ever until you are bored with multiplayer and promoting level 20 chars and not mining at mass effect 2 :P Oct.
I got 10 from my save cant remember but i had around 100k each