Minasgeraisite-(Y) is discredited on the basis of it being an ordered intermediate between datolite and hingganite-(Y) (IMA-CNMNC Proposal 23-F). An idealised formula is (Ca2Y2)□2(Be2B2)Si4O16(OH)4, which corresponds to Ca2□B2Si2O8(OH)2 (datolite) + Y2□Be2Si2O8(OH)2 (hingganite-(Y)). The type material is rich in Bi, the Bi-richest portion yet discovered from the type locality is shown to be an intermediate member between datolite, hingganite-(Y) and a hypothetical end-member phase yet to be found of composition Bi2□Be2Si2O8(OH)2. Minasgeraisite-(Y) has a different space group to datolite and hingganite-(Y). This lowering of symmetry to an acentric triclinic system is caused by different element occupancies on the A site of the gadolinite supergroup structure, which for minasgeraisite-(Y) becomes four individual sites. Such an order–disorder of elements is not considered as species-defining criteria despite the change in space group. Therefore, minasgeraisite-(Y) is discredited.

Minasgeraisite-(Y) 因其是介于 Datolite 和 Hingganite-(Y) 之间的有序中间体而受到质疑（IMA-CNMNC 提案 23-F）。理想化的分子式为(Ca 2 Y 2 )□ 2 (Be 2 B 2 )Si 4 O 16 (OH) 4，相当于Ca 2 □B 2 Si 2 O 8 (OH) 2 (datolite) + Y 2 □是2 Si 2 O 8 (OH) 2 (hingganite-(Y))。型材富含Bi，从型域发现的Bi最富部分显示为硅钙石、hingganite-(Y)和尚未发现的假想端元相之间的中间成员，其成分为Bi 2 □为2 Si 2 O 8 (OH) 2。Minasgeraisite-(Y) 与达托石和 Hingganite-(Y) 具有不同的空间群。无心三斜晶系对称性的降低是由铍铍长石超群结构的A位上的不同元素占据引起的，对于 minasgeraisite-(Y) 来说，该位点变成四个单独的位点。尽管空间群发生了变化，但这种元素的有序无序并不被视为物种定义标准。因此，minasgeraisite-(Y) 是不可信的。