How do I make a randomizer with different levels of rarity and then teleport meshparts using it?

Okay, I'm working on a mining game and I need some help with this script. It's a math.random randomizer with different rarity for each ore. I thought it would work, but nothing is cloning or teleporting. I'm still reasonably new to scripting and this might be completely wrong, so any help would be much appreciated. If you're still confused, I'll give you an example. If the math.random picks 32 then the script should clone a Diamond Ore to the position in the variable 'pos'. P.S. All "... Ore Models" are MeshParts if it helps.

orenumber = math.random(1,55)
pos = CFrame.new(Vector3.new(18, 1.248, 64))
copper = game.Workspace["Copper Ore Model"]
steel = game.Workspace["Steel Ore Model"]
gold = game.Workspace["Gold Ore Model"]
diamond = game.Workspace["Diamond Ore Model"]
amethyst = game.Workspace["Amethyst Ore Model"]
quartz = game.Workspace["Quartz Ore Model"]
blackopal = game.Workspace["Black Opal Ore Model"]
jadeite = game.Workspace["Jadeite Ore Model"]
musgravite = game.Workspace["Musgravite Ore Model"]
painite = game.Workspace["Painite Ore Model"]
if orenumber == 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 then
copper:Clone().CFrame = pos	
elseif orenumber == 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 then
steel:Clone().CFrame = pos	
elseif orenumber == 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 then
gold:Clone().CFrame = pos	
elseif orenumber == 29 or 30 or 31 or 32 or 33 or 34 then
diamond:Clone().CFrame = pos	
elseif orenumber == 35 or 36 or 37 or 38 or 39 or 40 then
amethyst:Clone().CFrame = pos	
elseif orenumber == 41 or 42 or 43 or 44 or 45 then
quartz:Clone().CFrame = pos
elseif orenumber == 46 or 47 or 48 or 49 then
blackopal:Clone().CFrame = pos	
elseif orenumber == 50 or 51 or 52 then
jadeite:Clone().CFrame = pos
elseif orenumber == 53 or 54 then
musgravite:Clone().CFrame = pos		
elseif orenumber == 55 then
painite:Clone().CFrame = pos
end

This does work, but since you did not set its parent, it is just lost in the heavens of your game, waiting to be parented. Also, CFrame needs 3 parameters, not 1. It is not ConvertToCFrame, so you should not have a vector3. Here is what your script should look like.

function ConvertToCFrame(pos)
	if typeof(pos) == 'Vector3' then
		return CFrame.new(pos.X, pos.Y, pos.Z)
	elseif typeof(pos) == 'CFrame' then
		return pos
	else
		return nil
	end
end

orenumber = math.random(1,55)
pos = ConvertToCFrame(Vector3.new(18, 1.248, 64))
copper = game.Workspace["Copper Ore Model"]
steel = game.Workspace["Steel Ore Model"]
gold = game.Workspace["Gold Ore Model"]
diamond = game.Workspace["Diamond Ore Model"]
amethyst = game.Workspace["Amethyst Ore Model"]
quartz = game.Workspace["Quartz Ore Model"]
blackopal = game.Workspace["Black Opal Ore Model"]
jadeite = game.Workspace["Jadeite Ore Model"]
musgravite = game.Workspace["Musgravite Ore Model"]
painite = game.Workspace["Painite Ore Model"]
if orenumber == 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 then
local c = copper:Clone()
c.CFrame = pos
c.Parent = workspace --DO NOT SET THE PARENT BEFORE YOU SET PROPERTIES.
--THIS CAUSES A BIG CHECK OF PROPERTIES ONCE PARENTED TO WORKSPACE.
elseif orenumber == 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 then
local c = steel:Clone()
c.CFrame = pos
c.Parent = workspace
elseif orenumber == 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 then
local c = gold:Clone()
c.CFrame = pos
c.Parent = workspace   
elseif orenumber == 29 or 30 or 31 or 32 or 33 or 34 then
local c = diamond:Clone()
c.CFrame = pos
c.Parent = workspace    
elseif orenumber == 35 or 36 or 37 or 38 or 39 or 40 then
local c = amethyst:Clone()
c.CFrame = pos
c.Parent = workspace  
elseif orenumber == 41 or 42 or 43 or 44 or 45 then
local c = quartz:Clone()
c.CFrame = pos
c.Parent = workspace
elseif orenumber == 46 or 47 or 48 or 49 then
local c = blackopal:Clone
c.CFrame = pos
c.Parent = workspace 
elseif orenumber == 50 or 51 or 52 then
local c = jadeite:Clone()
c.CFrame = pos
c.Parent = workspace
elseif orenumber == 53 or 54 then
local c = musgravite:Clone()
c.CFrame = pos
c.Parent = workspace 
elseif orenumber == 55 then
local c = painite:Clone()
c.CFrame = pos
c.Parent = workspace
end

Also, read my bio, otherwise I may not answer a future question of yours.

Hope this helps!