Civic Intelligence

Maine Mineral and Gem Museum

EIN 45-3818749 • 501(c)3 • Bethel, ME

Profile

The mission of the mmgm, a 501(c)(3) nonprofit organization is to celebrate the mineralogy of maine and to enlighten visitors as to the origin of earth and beyond through dynamic exhibits, educational programming and scientific research.

99 Main Street PO Box 500Bethel, ME 04217

mainemineralmuseum.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

88th percentile

0.82x

Higher debt load relative to assets than 88% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2024

Liabilities / Revenue

97th percentile

13.29x

Higher debt load relative to revenue than 97% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2024

Net Margin

3rd percentile

-123%

Higher net margin than 3% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2024

Top Officer Pay

15th percentile

$0

Higher top officer pay than 15% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

501(c)3 • $10M-$25M nonprofits • Source year 2024

Asset Growth

30th percentile

-1.0%

Faster asset growth than 30% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Annualized from 2023 to 2024

Revenue Growth

4th percentile

-51%

Faster revenue growth than 4% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / Assets88th percentile

Assets

Down

$15,506,450

Down $153,800 (-1.0%) from 2023

Liabilities

Up

$12,665,417

Up $1,407,993 (+13%) from 2023

Net Assets

Down

$2,841,033

Down $1,561,793 (-35%) from 2023

Operations
Liabilities / Revenue97th percentileNet Margin3rd percentile

Revenue

Down

$953,115

Down $1,002,202 (-51%) from 2023

Expenses

Up

$2,127,199

Up $368,491 (+21%) from 2023

Net Income

Down

-$1,174,084

Down $1,370,693 (-697%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth30th percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$20M$15M$10M$5.0M$0Assets 2013: $7,006,409Liabilities 2013: $813,228Net Assets 2013: $6,193,1812013Assets 2014: $7,765,344Liabilities 2014: $1,959,019Net Assets 2014: $5,806,3252014Assets 2015: $8,951,441Liabilities 2015: $3,361,832Net Assets 2015: $5,589,6092015Assets 2016: $10,117,351Liabilities 2016: $5,007,174Net Assets 2016: $5,110,1772016Assets 2017: $10,911,520Liabilities 2017: $4,912,402Net Assets 2017: $5,999,1182017Assets 2018: $14,247,914Liabilities 2018: $7,399,562Net Assets 2018: $6,848,3522018Assets 2020: $15,178,990Liabilities 2020: $8,952,477Net Assets 2020: $6,226,5132020Assets 2021: $14,617,603Liabilities 2021: $9,670,435Net Assets 2021: $4,947,1682021Assets 2022: $14,858,267Liabilities 2022: $10,619,320Net Assets 2022: $4,238,9472022Assets 2023: $15,660,250Liabilities 2023: $11,257,424Net Assets 2023: $4,402,8262023Assets 2024: $15,506,450Liabilities 2024: $12,665,417Net Assets 2024: $2,841,0332024

Highlighted filing

2024

Assets$15,506,450
Liabilities$12,665,417
Net Assets$2,841,033
Open 2024 Filing

Operations Trend

Revenue Growth4th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$10M$5.0M$0-$5.0MRevenue 2013: $6,816,965Expenses 2013: $381,905Net Income 2013: $6,435,0602013Revenue 2014: $53,391Expenses 2014: $440,247Net Income 2014: -$386,8562014Revenue 2015: $500,735Expenses 2015: $649,214Net Income 2015: -$148,4792015Revenue 2016: $280,834Expenses 2016: $795,356Net Income 2016: -$514,5222016Revenue 2017: $302,360Expenses 2017: $904,515Net Income 2017: -$602,1552017Revenue 2018: $1,914,448Expenses 2018: $1,034,337Net Income 2018: $880,1112018Revenue 2020: $993,242Expenses 2020: $1,640,257Net Income 2020: -$647,0152020Revenue 2021: $769,092Expenses 2021: $2,048,437Net Income 2021: -$1,279,3452021Revenue 2022: $517,942Expenses 2022: $1,704,257Net Income 2022: -$1,186,3152022Revenue 2023: $1,955,317Expenses 2023: $1,758,708Net Income 2023: $196,6092023Revenue 2024: $953,115Expenses 2024: $2,127,199Net Income 2024: -$1,174,0842024

Highlighted filing

2024

Revenue$953,115
Expenses$2,127,199
Net Income-$1,174,084
Open 2024 Filing

Filings

Most recent year

2024 • Form 990Detailed filing. Detailed filing data is available for this year.

Open filing
Assets
$15,506,450
Liabilities
$12,665,417
Net assets
$2,841,033
Revenue
$953,115
Expenses
$2,127,199
Net income
-$1,174,084
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$15.5$12.7$2.84$0.95$2.13$1.17
2023Detailed filing. Detailed filing data is available for this year.$15.7$11.3$4.40$1.96$1.76$0.20
2022Detailed filing. Detailed filing data is available for this year.$14.9$10.6$4.24$0.52$1.70$1.19
2021Detailed filing. Detailed filing data is available for this year.$14.6$9.67$4.95$0.77$2.05$1.28
2020Detailed filing. Detailed filing data is available for this year.$15.2$8.95$6.23$0.99$1.64$0.65
2018Detailed filing. Detailed filing data is available for this year.$14.2$7.40$6.85$1.91$1.03$0.88
2017Detailed filing. Detailed filing data is available for this year.$10.9$4.91$6.00$0.30$0.90$0.60
2016Detailed filing. Detailed filing data is available for this year.$10.1$5.01$5.11$0.28$0.80$0.51
2015Detailed filing. Detailed filing data is available for this year.$8.95$3.36$5.59$0.50$0.65$0.15
2014Detailed filing. Detailed filing data is available for this year.$7.77$1.96$5.81$0.05$0.44$0.39
2013Detailed filing. Detailed filing data is available for this year.$7.01$0.81$6.19$6.82$0.38$6.44
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Nov 12, 2025
Return Version
2024v5.0
Gross Receipts
$1,250,501
Mission and Program Overview

Mission

The mission of the mmgm, a 501(c)(3) nonprofit organization is to celebrate the mineralogy of maine and to enlighten visitors as to the origin of earth and beyond through dynamic exhibits, educational programming and scientific research.

Balance Sheet Detail
LineBeginningEndChange
Assets
Loans From Officers Directors$11,233,212$12,542,212▲ $1,309,000
Land, Buildings, and Equipment, Net$10,032,330$9,564,059▼ $468,271
Investments Other Securities$688,549$929,948▲ $241,399
Cash and Non-Interest-Bearing Accounts$349,117$352,759▲ $3,642
Inventories for Sale or Use$341,742$318,695▼ $23,047
Prepaid Expenses and Deferred Charges$24,894$24,401▼ $493
Total Assets$15,660,250$15,506,450▼ $153,800
Other Assets Total$4,223,618$4,316,588▲ $92,970
Liabilities
Accounts Payable and Accrued Expenses$18,324$87,020▲ $68,696
Other Liabilities$5,888$36,185▲ $30,297
Total Liabilities$11,257,424$12,665,417▲ $1,407,993
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$4,402,826$2,841,033▼ $1,561,793
Total Net Assets Fund Balance$4,402,826$2,841,033▼ $1,561,793
Total Liabilities and Net Assets / Fund Balance$15,660,250$15,506,450▼ $153,800

Asset Categories

AssetBook ValueDepreciationBasis
Other Land Buildings$8,245,861$1,904,744$10,150,605
Equipment$799,350$172,869$972,219
Land$367,778-$367,778
Leasehold Improvements$88,576$7,610$96,186
Buildings$62,494$3,424$65,918
Other Assets Org$300--
Other Securities$929,948--
Compensation and Service Providers
Top Officer Pay15th percentile

Board Members and Trustees

NameTitle
Lawrence T P Stifler PhdPresident
Dr Peter Km MegawTrustee
Jean BenedictTrustee
John BettsTrustee
Mary McfaddenTrustee
Susan C MartinTrustee
Don DallaireTreasurer /s
Henry MinotVice Preside

Highest Paid Contractors

ContractorServicesLocationCompensation
Jessica SiracoManagement7 SILVER WAY, West Paris, ME 04289$107,415
Revenue and Support

Revenue Composition

Contributions and Grants
$568,720
Program Service Revenue
$180,289
Investment Income
$104,553
Other Revenue
$99,553
All Other Contributions
$530,916
Change in Net Assets
$-1,174,084

Noncash Contribution Practices

Property subject to holding requirements
No
Reviewed unusual noncash gifts
No
Third parties used for noncash contributions
No

Noncash Contributions

Contribution TypeContribution CountReported Amount
Scientific Specimens2$274,817
Total Noncash Contributions2$274,817
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$1,308,798
Salaries, Compensation, and Employee Benefits$818,401
Total Fundraising Expense$5,726
Grants and Similar Amounts Paid$0
Professional Fundraising Fees$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Other Salaries and Wages$752,882--$752,882
Depreciation Depletion$446,062--$446,062
Insurance$123,814--$123,814
Occupancy$92,509--$92,509
All Other Expenses$17,588$51,879$5,726$75,193
Advertising$67,265--$67,265
Payroll Taxes$65,519--$65,519
Travel$22,575--$22,575
Other Expenses$53,354$20,499-$20,499
Office Expenses-$16,956-$16,956
Fees for Services Other-$6,123-$6,123
Fees for Services Legal-$5,669-$5,669
Conferences and Meetings$4,483--$4,483
Interest-$10-$10
Total Functional Expenses$1,860,383$261,090$5,726$2,127,199
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$0
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Insider Transactions and Loans

Loans and Receivables

Line ItemBeginningEndChange
Loans from Officers, Directors, Trustees, and Key Employees$11,233,212$12,542,212▲ $1,309,000
Debt and Bond Financing

Other Reported Liabilities

LiabilityAmount
Payroll Liability$33,474
Customer Deposits$1,364
Sales Tax Payable$1,347
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Backup withholding compliance
No
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
No
Other officer compensation reviewed
No
Conflict-of-interest policy
No
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No

Governance Explanations

Form 990, Page 6, Part VI, Line 2

“Lawrence t p stifler, ph.d mary mcfadden president trustee spouses”

Form 990, Page 6, Part VI, Line 11B

“No review was or will be conducted.”

Form 990, Page 6, Part VI, Line 19

“No documents available to the public”

Filing and Contact Details

Filer

Filer Name
Maine Mineral and Gem Museum
EIN
45-3818749
Phone
2078243036
Address
99 MAIN STREET PO BOX 500, BETHEL, ME 04217

Signing Officer

Name
Lawrence T P Stifler Phd
Title
President
Phone
2078243036
Signed
2025-11-12
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Lawrence T P Stifler Phd
Legal Domicile
Me
Voting Board Members
8
Independent Board Members
8
Employees
25
Volunteers
25

Preparer

Firm
Alliance Accounting Group LLC
Address
23 ROYAL ROAD STE 101, FLEMINGTON, NJ 08822
Preparer
Lee W Hessberger CPA
Phone
9087517090
Supplemental Narrative

Additional Explanations

FORM 990 - ORGANIZATION'S MISSION

“The mission of the mmgm, a 501(c)(3) nonprofit organization is to celebrate the mineralogy of maine and to enlighten visitors as to the origin of earth and beyond through dynamic exhibits, educational programming and scientific research.”

Form 990, Page 2, Part III, Line 4D

“OTHER”

Form 990, Part XI, Line 9

“Book / tax depreciation difference 28”

Raw XML AppendixShowing 400 of 488 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt08475
IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt04402826
IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt02841033
IRS990/NoListedPersonsCompensatedInd0X
IRS990/NoncashContributionsAmt0274817
IRS990/NondeductibleContributionsInd0false
IRS990/OccupancyGrp/ProgramServicesAmt092509
IRS990/OccupancyGrp/TotalAmt092509
IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt016956
IRS990/OfficeExpensesGrp/TotalAmt016956
IRS990/OfficerMailingAddressInd0false
IRS990/OperateHospitalInd0false
IRS990/Organization501c3Ind0X
IRS990/OrganizationFollowsFASB117Ind0X
IRS990/OtherAssetsTotalGrp/BOYAmt04223618
IRS990/OtherAssetsTotalGrp/EOYAmt04316588
IRS990/OtherChangesInNetAssetsAmt028
IRS990/OtherExpensesGrp/Desc0CONTRACTED SERVICES
IRS990/OtherExpensesGrp/Desc1REPAIRS & MAINTENANCE
IRS990/OtherExpensesGrp/Desc2EVENTS/PROGRAM EXPENSES
IRS990/OtherExpensesGrp/Desc3SOFTWARE SUBSCRIPTIONS /
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt0159954
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt120499
IRS990/OtherExpensesGrp/ProgramServicesAmt0214332
IRS990/OtherExpensesGrp/ProgramServicesAmt153354
IRS990/OtherExpensesGrp/TotalAmt0214332
IRS990/OtherExpensesGrp/TotalAmt1159954
IRS990/OtherExpensesGrp/TotalAmt253354
IRS990/OtherExpensesGrp/TotalAmt320499
IRS990/OtherLiabilitiesGrp/BOYAmt05888
IRS990/OtherLiabilitiesGrp/EOYAmt036185
IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt0752882
IRS990/OtherSalariesAndWagesGrp/TotalAmt0752882
IRS990/PartialLiquidationInd0false
IRS990/PayPremiumsPrsnlBnftCntrctInd0false
IRS990/PayrollTaxesGrp/ProgramServicesAmt065519
IRS990/PayrollTaxesGrp/TotalAmt065519
IRS990/PoliticalCampaignActyInd0false
IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt024894
IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt024401
IRS990/PrincipalOfficerNm0LAWRENCE T P STIFLER PHD
IRS990/PriorPeriodAdjustmentsAmt0-387737
IRS990/ProfessionalFundraisingInd0false
IRS990/ProgramServiceRevenueGrp/Desc0ADMISSIONS
IRS990/ProgramServiceRevenueGrp/Desc1LAB ANALYSIS
IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt0175119
IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt15170
IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt0175119
IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt15170
IRS990/ProgSrvcAccomActyOtherGrp/Desc0OTHER
IRS990/ProhibitedTaxShelterTransInd0false
IRS990/PYContributionsGrantsAmt01418071
IRS990/PYExcessBenefitTransInd0false
IRS990/PYInvestmentIncomeAmt087165
IRS990/PYOtherExpensesAmt01168468
IRS990/PYOtherRevenueAmt0274968
IRS990/PYProgramServiceRevenueAmt0175113
IRS990/PYRevenuesLessExpensesAmt0196609
IRS990/PYSalariesCompEmpBnftPaidAmt0590240
IRS990/PYTotalExpensesAmt01758708
IRS990/PYTotalRevenueAmt01955317
IRS990/QuidProQuoContributionsInd0false
IRS990/RcvFndsToPayPrsnlBnftCntrctInd0false
IRS990/ReconcilationRevenueExpnssAmt0-1174084
IRS990/RelatedEntityInd0false
IRS990/RelatedOrganizationCtrlEntInd0false
IRS990/RentalIncomeOrLossGrp/RealAmt08475
IRS990/ReportInvestmentsOtherSecInd0true
IRS990/ReportLandBuildingEquipmentInd0true
IRS990/ReportOtherAssetsInd0true
IRS990/ReportOtherLiabilitiesInd0true
IRS990/ReportProgramRelatedInvstInd0false
IRS990/RevenueAmt0180289
IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/CurrentTaxYearAmt0464157
IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/CurrentTaxYearMinus1YearAmt0481449
IRS990ScheduleA/AmountsRcvdDsqlfyPersonGrp/TotalAmt0945606
IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt0INSURANCE PROCEEDS 657,091 GAIN ON SALES OF ASSETS 42
IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc0PART III, LINE 12
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt0568720
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt01418071
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt0119127
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt0279368
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt0328547
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt02713833
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearAmt08400
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt07573
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt011573
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus3YearsAmt09292
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus4YearsAmt030324
IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt067162
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearAmt0673381
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus1YearAmt0719134
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus2YearsAmt0504310
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus3YearsAmt0479872
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus4YearsAmt0268106
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt02644803
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt08400
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus1YearAmt07573
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt011573
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus3YearsAmt09292
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus4YearsAmt030324
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt067162
IRS990ScheduleA/InvestmentIncomeCYPct00.01000
IRS990ScheduleA/InvestmentIncomePYPct00.00000
IRS990ScheduleA/OtherIncome509Grp/CurrentTaxYearMinus3YearsAmt0162858
IRS990ScheduleA/OtherIncome509Grp/CurrentTaxYearMinus4YearsAmt0494275
IRS990ScheduleA/OtherIncome509Grp/TotalAmt0657133
IRS990ScheduleA/PubliclySupportedOrg509a2Ind0X
IRS990ScheduleA/PublicSupportCY509Pct00.64970
IRS990ScheduleA/PublicSupportTotal509Amt03952241
IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearAmt0464157
IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus1YearAmt0746957
IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus2YearsAmt032300
IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus3YearsAmt021558
IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/CurrentTaxYearMinus4YearsAmt0141423
IRS990ScheduleA/SubstAndDsqlfyPrsnsTotGrp/TotalAmt01406395
IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus1YearAmt0265508
IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus2YearsAmt032300
IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus3YearsAmt021558
IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus4YearsAmt0141423
IRS990ScheduleA/SubstantialContributorsAmtGrp/TotalAmt0460789
IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind0X
IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt01242101
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt02137205
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt0623437
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt0759240
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt0596653
IRS990ScheduleA/Total509Grp/TotalAmt05358636
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt01250501
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt02144778
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt0635010
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt0931390
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt01121252
IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt06082931
IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorNum0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine20RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt0RESTRICTED
IRS990/ScheduleBRequiredInd0true
IRS990ScheduleD/BuildingsGrp/BookValueAmt062494
IRS990ScheduleD/BuildingsGrp/DepreciationAmt03424
IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt065918
IRS990ScheduleD/EquipmentGrp/BookValueAmt0799350
IRS990ScheduleD/EquipmentGrp/DepreciationAmt0172869
IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt0972219
IRS990ScheduleD/LandGrp/BookValueAmt0367778
IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt0367778
IRS990ScheduleD/LeaseholdImprovementsGrp/BookValueAmt088576
IRS990ScheduleD/LeaseholdImprovementsGrp/DepreciationAmt07610
IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt096186
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt04274519
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt120432
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt219050
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt32287
IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt4300
IRS990ScheduleD/OtherAssetsOrgGrp/Desc0COLLECTION
IRS990ScheduleD/OtherAssetsOrgGrp/Desc1LIBRARY
IRS990ScheduleD/OtherAssetsOrgGrp/Desc2WEBSITE
IRS990ScheduleD/OtherAssetsOrgGrp/Desc3MUSEUM FABRICATION
IRS990ScheduleD/OtherAssetsOrgGrp/Desc4SECURITY DEPOSIT
IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt08245861
IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt01904744
IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt010150605
IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt033474
IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt11364
IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt21347
IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc0PAYROLL LIABILITY
IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc1CUSTOMER DEPOSITS
IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc2SALES TAX PAYABLE
IRS990ScheduleD/OtherSecuritiesGrp/BookValueAmt0929948
IRS990ScheduleD/SolicitedAssetsSaleInd0true
IRS990ScheduleD/TotalBookValueLandBuildingsAmt09564059
IRS990ScheduleD/TotalBookValueOtherAssetsAmt04316588
IRS990ScheduleD/TotalBookValueSecuritiesAmt0929948
IRS990ScheduleD/TotalLiabilityAmt036185
IRS990/ScheduleJRequiredInd0false
IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/BalanceDueAmt012542212
IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/BoardOrCommitteeApprovalInd0false
IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/DefaultInd0false
IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/LoanToOrganizationInd0X
IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/PersonNm0STIFLER FAMILY FOUNDATION
IRS990ScheduleL/LoansBtwnOrgInterestedPrsnGrp/WrittenAgreementInd0false
IRS990ScheduleL/TotalBalanceDueAmt012542212
IRS990ScheduleM/AnyPropertyThatMustBeHeldInd0false
IRS990ScheduleM/ReviewProcessUnusualNCGiftsInd0false
IRS990ScheduleM/ScientificSpecimensGrp/ContributionCnt02
IRS990ScheduleM/ScientificSpecimensGrp/NonCashCheckboxInd0X
IRS990ScheduleM/ScientificSpecimensGrp/NoncashContributionsRptF990Amt0274817
IRS990ScheduleM/ThirdPartiesUsedInd0false
IRS990/ScheduleORequiredInd0false
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0THE MISSION OF THE MMGM, A 501(C)(3) NONPROFIT ORGANIZATION IS TO CELEBRATE THE MINERALOGY OF MAINE AND TO ENLIGHTEN VISITORS AS TO THE ORIGIN OF EARTH AND BEYOND THROUGH DYNAMIC EXHIBITS, EDUCATIONAL PROGRAMMING AND SCIENTIFIC RESEARCH.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1OTHER

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